Category Archives: Java Programs

Java Programs

Java Program to find the frequency of each element in the array

In this tutorial, we will learn to create a Java program that will find the Frequency of each Element in an Array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Program to Find Frequency of each Element in an Array.

In this program, we will count the frequency of each element in the array. The frequency means the occurrence of the element in that array.

Here, we will first initialize the array. After that, we will find the length of the array. Then we will count the frequency of every element in the array. At last, we will print the frequency of each element to the user.

With the help of this program, we can print the Frequency of each Element in an Array.

Program Code:-

public class Frequency {  
    public static void main(String[] args) {  
        //declaring the array and the character for the program
        int [] arr = new int [] {1, 2, 8, 3, 2, 2, 2, 5, 1};
        int i,j;
        //Array fr will store frequencies of element  
        int [] fr = new int [arr.length];  
        int occ = -1;  
        for( i = 0; i < arr.length; i++){  
            int flag = 1;  
            for( j = i+1; j < arr.length; j++){  
                if(arr[i] == arr[j]){  
                    flag++;  
                    //To avoid counting same element again  
                    fr[j] = occ;  
                }  
            }  
            if(fr[i] != occ)  
                fr[i] = flag;  
        }  
  
        //printing the frequency of each element present in array  
        System.out.println("------------------");  
        System.out.println(" Element | Frequency");  
        System.out.println("------------------");  
        for( i = 0; i < fr.length; i++){  
            if(fr[i] != occ)  
                System.out.println("    " + arr[i] + "    |    " + fr[i]);  
        }  
        System.out.println("----------------------------------------");  
    }}

public class Frequency {

public static void main(String[] args) {

//declaring the array and the character for the program

int [] arr = new int [] {1, 2, 8, 3, 2, 2, 2, 5, 1};

int i,j;

//Array fr will store frequencies of element

int [] fr = new int [arr.length];

int occ = -1;

for( i = 0; i < arr.length; i++){

int flag = 1;

for( j = i+1; j < arr.length; j++){

if(arr[i] == arr[j]){

flag++;

//To avoid counting same element again

fr[j] = occ;

}

if(fr[i] != occ)

fr[i] = flag;

}

//printing the frequency of each element present in array

System.out.println("------------------");

System.out.println(" Element | Frequency");

System.out.println("------------------");

for( i = 0; i < fr.length; i++){

if(fr[i] != occ)

System.out.println(" " + arr[i] + " | " + fr[i]);

}

System.out.println("----------------------------------------");

}}

Output:-

In the above program, we have first initialized the required variable.

arr[] = it will hold the integer value.
i = it will hold the integer value.
j = it will hold the integer value.
occ = it will hold the element’s occurrence.

Calculating the size of the array using the length function, Then we will add count the frequency of each element using the for-loop.

Printing the frequency of each element in the array.

Java Program to copy all elements of one array into another array

In this tutorial, we will learn to create a Java program that will copy all elements of one array into another array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Algorithm:-

STEP 1: START

STEP 2: INITIALIZE arr1[] ={1, 2, 3, 4, 5}

STEP 3: CREATE arr2[] of size arr1[].

STEP 4: COPY elements of arr1[] to arr2[]

STEP 5: REPEAT STEP 6 UNTIL (i<arr1.length)

STEP 6: arr2[i] =arr1[i]

STEP 7: DISPLAY elements of arr1[].

STEP 8: REPEAT STEP 9 UNTIL (i<arr1.length)

STEP 9: PRINT arr1[i]

STEP 10: DISPLAY elements of arr2[].

STEP 11: REPEAT STEP 12 UNTIL (i<arr2.length)

STEP 12: PRINT arr2[i].

STEP 13: END

STEP 1: START

STEP 2: INITIALIZE arr1[] ={1, 2, 3, 4, 5}

STEP 3: CREATE arr2[] of size arr1[].

STEP 4: COPY elements of arr1[] to arr2[]

STEP 5: REPEAT STEP 6 UNTIL (i<arr1.length)

STEP 6: arr2[i] =arr1[i]

STEP 7: DISPLAY elements of arr1[].

STEP 8: REPEAT STEP 9 UNTIL (i<arr1.length)

STEP 9: PRINT arr1[i]

STEP 10: DISPLAY elements of arr2[].

STEP 11: REPEAT STEP 12 UNTIL (i<arr2.length)

STEP 12: PRINT arr2[i].

STEP 13: END

Copy all array elements to another array.

In this program, First, we will first declare the size of the array and its elements for the prorgam. Then we will find the length of array 1 using the length function for the second array. After that we will copy the elements of the array one to array two. At last, we will print the first and the second array to the user.

With the help of this program, we can copy all elements of one array into another array.

Program Code:-

public class CpyArry {    
    public static void main(String[] args) {        
        //Declaring the required array for the program.     
        int [] arr1 = new int [] {1, 2, 3, 4, 5};    
        //Finding the size of array 1
        //Create another array arr2 with size of arr1    
        int arr2[] = new int[arr1.length];    
        
        //Copying all elements of one array 1 into another array   
        for (int i = 0; i < arr1.length; i++) {     
            arr2[i] = arr1[i];     
        }      
        
         //Printing elements of array arr1     
        System.out.println("Elements of original array: ");    
        for (int i = 0; i < arr1.length; i++) {     
           System.out.print(arr1[i] + " ");    
        }     
            
        System.out.println();    
            
        //Printing elements of array arr2     
        System.out.println("Elements of new array: ");    
        for (int i = 0; i < arr2.length; i++) {     
           System.out.print(arr2[i] + " ");    
        }     
    }    
}

public class CpyArry {

public static void main(String[] args) {

//Declaring the required array for the program.

int [] arr1 = new int [] {1, 2, 3, 4, 5};

//Finding the size of array 1

//Create another array arr2 with size of arr1

int arr2[] = new int[arr1.length];

//Copying all elements of one array 1 into another array

for (int i = 0; i < arr1.length; i++) {

arr2[i] = arr1[i];

}

//Printing elements of array arr1

System.out.println("Elements of original array: ");

for (int i = 0; i < arr1.length; i++) {

System.out.print(arr1[i] + " ");

}

System.out.println();

//Printing elements of array arr2

System.out.println("Elements of new array: ");

for (int i = 0; i < arr2.length; i++) {

System.out.print(arr2[i] + " ");

}

Output:-

In the above program, we have first initialized the required variable.

arr1[] = it will hold the integer value.
arr2[] = it will hold the integer value.
i = it will hold the integer value.

Finding the size of the array one using the length function.

Copying the elements of the array one to the second array.

Printing array 1 to the user.

Printing array 2 to the user.

Java Program to Add Two Matrix Using Multi-dimensional Arrays

Java Program to Add Two Matrices Using Multi-dimensional Arrays

In this tutorial, we will learn to create a Java program that will Add Two Matrix Using Multi-dimensional Arrays using Java programming.

Prerequisites:-

Before starting with the tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.

Program to Add Two Matrices Using Multi-dimensional Arrays

In this program, First, we will take two matrices in input from the user using looping statements for the program. Then secondly, we will add the two matrices using the for loops into a third matrix. At last, we will print the added matrix to the user using the system. Out method.

Algorithm:-

With the help of this program, we can Add Two Matrices Using Multi-dimensional Arrays

Program:-

public class Add2Matrix{  
//Body of the main function
public static void main(String args[]){  
//Declaring the reuired variabled for the program.
int i,j;
//creating two matrices for the program    
int x[][]={{1,2,3},{4,5,6},{7,8,9}};    
int y[][]={{8,8,9},{7,6,6},{5,3,4}};    

//creating another matrix to store the sum of two matrices    
int sum[][]=new int[3][3];  //3 rows and 3 columns  
//Printing the matrix 1
System.out.println("Matrix 1");
for( i=0;i<3;i++){    
for( j=0;j<3;j++){    

System.out.print(x[i][j]+" ");    
}    
System.out.println();//new line    
}
//Printing the matrix 2
System.out.println("Matrix 2");
for( i=0;i<3;i++){    
for( j=0;j<3;j++){    

System.out.print(y[i][j]+" ");    
}    
System.out.println();//new line    
}
//Printing the added matrix 
System.out.println("Added matrix");
//adding and printing addition of 2 matrices    
for( i=0;i<3;i++){    
for( j=0;j<3;j++){    
sum[i][j]=x[i][j]+y[i][j];    
System.out.print(sum[i][j]+" ");    
}    
System.out.println();//new line    
}    
}}

public class Add2Matrix{

//Body of the main function

public static void main(String args[]){

//Declaring the reuired variabled for the program.

int i,j;

//creating two matrices for the program

int x[][]={{1,2,3},{4,5,6},{7,8,9}};

int y[][]={{8,8,9},{7,6,6},{5,3,4}};

//creating another matrix to store the sum of two matrices

int sum[][]=new int[3][3]; //3 rows and 3 columns

//Printing the matrix 1

System.out.println("Matrix 1");

for( i=0;i<3;i++){

for( j=0;j<3;j++){

System.out.print(x[i][j]+" ");

}

System.out.println();//new line

}

//Printing the matrix 2

System.out.println("Matrix 2");

for( i=0;i<3;i++){

for( j=0;j<3;j++){

System.out.print(y[i][j]+" ");

}

System.out.println();//new line

}

//Printing the added matrix

System.out.println("Added matrix");

//adding and printing addition of 2 matrices

for( i=0;i<3;i++){

for( j=0;j<3;j++){

sum[i][j]=x[i][j]+y[i][j];

System.out.print(sum[i][j]+" ");

}

System.out.println();//new line

}

}}

Output:-

In the above program, we have first initialized the required variable.

x[][] = it will hold the integer value.
y[][] = it will hold the integer value.
sum[][] = it will hold the integer value.
i= it will hold the integer value.
j= it will hold the integer value.

Printing the first matrix to the user.

Printing the second matrix to the user.

Adding the two matrices into 1 and printing the added matrix to the user.

Java Program to convert char Array to String

In this tutorial, we will learn to create a Java program that will convert char Array to String using Java programming.

Prerequisites.

Before starting with this tutorial, we assume that you are the best aware of the following C programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Conditional Statements in Java programming.

Program to convert char Array to String.

In this program, First, we will declare the array in the java program. Then we will define a function to convert a character array to a string. Then we will return the string to the main function. At last, we will print the string to the user.

With the help of this program, we can convert char Array to String.

Algorithm:-

1. Declaring the variables for the program.

2. Initializing the array of character.

3. Passing that array to the function.

4. Converting the character array to string.

5. Returning the string to the main function for printing.

6. End the program.

1. Declaring the variables for the program.

2. Initializing the array of character.

3. Passing that array to the function.

4. Converting the character array to string.

5. Returning the string to the main function for printing.

6. End the program.

Program to convert the character to string:-

// Java program to Convert Character Array to String
// Using copyOf() method ofArrays class

// Main class of program 
class CharArrayToString {

	// Method 1
	// To convert a character
	// array to a string using the constructor
	public static String toString(char[] a)
	{
		// Creating object of String class
		String string = new String(a);

		return string;
	}

	// Main driver method
	public static void main(String args[])
	{
        // Declaring the required variable for the program.
		// Character array.
		char ch[] = {'g', 'o', 'o', 'd', ' ', 'm', 'o', 'r', 'n', 'i', 'n', 'g', ' ', 'I','T','S',' ','W','3','A','D','D','A'};
        //Printing the covverted string from the array throug the fucntion
		// Printing converted string from character array
		System.out.println(toString(ch));
	}
}

// Java program to Convert Character Array to String

// Using copyOf() method ofArrays class

// Main class of program

class CharArrayToString {

// Method 1

// To convert a character

// array to a string using the constructor

public static String toString(char[] a)

{

// Creating object of String class

String string = new String(a);

return string;

}

// Main driver method

public static void main(String args[])

{

// Declaring the required variable for the program.

// Character array.

char ch[] = {'g', 'o', 'o', 'd', ' ', 'm', 'o', 'r', 'n', 'i', 'n', 'g', ' ', 'I','T','S',' ','W','3','A','D','D','A'};

//Printing the covverted string from the array throug the fucntion

// Printing converted string from character array

System.out.println(toString(ch));

}

Output:-

character to string output.

In the above program, we have first initialized the required variable.

ch[] = it will hold a character array declared.

Passing that character array to the function for conversion.

A user-defined function that will convert the string from the Character array.

Printing the string by calling the function from the logical code.

Java Program to reverse an array

Java Program to Reverse an Array.

In this tutorial, we will learn to create a Java program that will reverse an Array Using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Reversing an Array:-

In this program, First, we will first take the size of the array from the user. Then we will take the elements of the array from the user. Then we will copy elements of the array. After that, we will reverse the array using the for-loop. Then we will print the reverse of the original array to the user.

With the help of this program, we can be reverse an Array.

Program Code:-

import java.util.*;
class ReversalArray
{
    //Body of the main funciton.
    public static void main(String[] args) 
    {
        //Declaring the required varaibles for the program.
        int size, res,i,j=0;
        //i,j = it will hold the integer value for the loops.
        
        Scanner s = new Scanner(System.in);
        //Taking the size of the array
        System.out.print("Enter number of elements in the array:");
        size = s.nextInt();
        int array[] = new int[size];
        int rev[] = new int[size];
        //Taking the elements of the array
        System.out.println("Enter "+size+" elements ");
        for( i=0; i < size; i++)
        {
            array[i] = s.nextInt();
        }
        //Reversing the array for the user.
        System.out.println("Reverse of an array is :");
        for( i=size;i>0 ; i--,j++)
        {
            rev[j] = array[i-1];
            //Printing the reversal of the array to the user.
            System.out.println(rev[j]);
    
        }
    }
}

import java.util.*;

class ReversalArray

{

//Body of the main funciton.

public static void main(String[] args)

{

//Declaring the required varaibles for the program.

int size, res,i,j=0;

//i,j = it will hold the integer value for the loops.

Scanner s = new Scanner(System.in);

//Taking the size of the array

System.out.print("Enter number of elements in the array:");

size = s.nextInt();

int array[] = new int[size];

int rev[] = new int[size];

//Taking the elements of the array

System.out.println("Enter "+size+" elements ");

for( i=0; i < size; i++)

{

array[i] = s.nextInt();

}

//Reversing the array for the user.

System.out.println("Reverse of an array is :");

for( i=size;i>0 ; i--,j++)

{

rev[j] = array[i-1];

//Printing the reversal of the array to the user.

System.out.println(rev[j]);

}

Output:-

In the above program, we have first initialized the required variable.

array[] = it will hold the integer value.
i = it will hold the integer value.
j = it will hold the integer value.
size = it will hold the integer value.

Taking the size of the array and the elements.

Program Code to Reverse an Array.

Printing reversed array to the user.

Java Program to Count Duplicate Elements in Array

In this tutorial, we will learn to create a Java program that will count the duplicate elements of an array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Algorithm:-

Step 1 :- Initialization of the program.

Step 2 :- Taking the input size of the array.

Step 3 :- Taking the elements of the array from the user for the program.

Step 4 :- Counting the duplicate elements of the array.

Step 5 :- Printing the number of duplicate elements in the array.

Step 6 :- Ending the execution of the program.

Step 1 :- Initialization of the program.

Step 2 :- Taking the input size of the array.

Step 3 :- Taking the elements of the array from the user for the program.

Step 4 :- Counting the duplicate elements of the array.

Step 5 :- Printing the number of duplicate elements in the array.

Step 6 :- Ending the execution of the program.

Printing the duplicate Elements in an Array.

In this program, First, we will first take the size of the array from the user. Then we will take the elements of the array from the user. After that, we will use the conditional statements and the loops to check the duplicate elements of the array. Then we will be using a for loop to print the duplicate elements of the array.

With the help of this program, we can be print the duplicate elements of the array.

Program Code:-

import java.util.Scanner;

public class DupElCount {
	private static Scanner sc;
	//Body of the main function of the program.
	public static void main(String[] args) {
	    //Declaring the required variables for the program.
		int no, i, j, temp = 0;
		
		sc = new Scanner(System.in);
		//Taking the size of the array.
		System.out.print("\nPlease Enter the size of the array : ");
		no = sc.nextInt();
		
		int[] temp_arr = new int[no];
		//Taking the elements of the array.
		System.out.format("\nEnter The elements of Array total %d elements : ", no);
		for(i = 0; i < no; i++) 
		{
			temp_arr[i] = sc.nextInt();
		}
		//Finding the duplicate number of elements in the array.
		for(i = 0; i < no; i++) 
		{
			for(j = i + 1; j < no; j++)
			{
				if(temp_arr[i] == temp_arr[j]) {
					temp++;
					break;
				}
			}
		}
		//Printing the duplicate number of elements in the array to the user.
		System.out.println("\nTotal Number of Duplicate elements in the array  = " + temp);
	}
}

import java.util.Scanner;

public class DupElCount {

private static Scanner sc;

//Body of the main function of the program.

public static void main(String[] args) {

//Declaring the required variables for the program.

int no, i, j, temp = 0;

sc = new Scanner(System.in);

//Taking the size of the array.

System.out.print("\nPlease Enter the size of the array : ");

no = sc.nextInt();

int[] temp_arr = new int[no];

//Taking the elements of the array.

System.out.format("\nEnter The elements of Array total %d elements : ", no);

for(i = 0; i < no; i++)

{

temp_arr[i] = sc.nextInt();

}

//Finding the duplicate number of elements in the array.

for(i = 0; i < no; i++)

{

for(j = i + 1; j < no; j++)

{

if(temp_arr[i] == temp_arr[j]) {

temp++;

break;

}

//Printing the duplicate number of elements in the array to the user.

System.out.println("\nTotal Number of Duplicate elements in the array = " + temp);

}

Output:-

In the above program, we have first initialized the required variable.

no = it will hold the integer value.
i = it will hold the integer value.
j = it will hold the integer value.
temp = it will hold the integer value.

Taking the size of the array from the user.

Taking the input elements for the array.

Finding the duplicate number of elements of the array.

Printing output duplicate number of elements of the array.

Java Program to Add the elements of an Array

In this tutorial, we will learn to create a Java program that will add the elements of an Array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

What is An array?

The array is a collection of similar data types. An array can store multiple values with different indexes in memory by using a single variable. The array can be both single and multidimensional.

Program description to find add the Elements of an Array.

In this program, we will first take the input array size and the elements from the user. Then we will add all the elements of the array using a for-loop. At last, we will print all the elements of the array to the user.

With the help of this program, we can add the Elements of an Array.

Program Code:-

import java.util.Arrays;//Importing the package for array 
import java.util.Scanner;//Importing the package for taking input 
public class AddElmOfArray {
    
   //Body of the main function of the program
   public static void main(String args[]){
       
      //Taking the size of the array From the user
      System.out.println("Enter the required size of the array :: ");
      Scanner s = new Scanner(System.in);
      int size = s.nextInt();
      int arry[] = new int [size];
      int sum = 0;
      int i;
      //Taking the elements of the arry from the user.
      System.out.println("Enter the elements of the array one by one ");
      //Using the for loop to take the input elements
      for( i=0; i<size; i++){
         arry[i] = s.nextInt();
         sum = sum + arry[i];
      }
      //Printing the elements of the array 
      System.out.println("Elements of the array are: "+Arrays.toString(arry));
      //Printing the sun of the elements of the array.
      System.out.println("Sum of the elements of the array ::"+sum);
   }
}

import java.util.Arrays;//Importing the package for array

import java.util.Scanner;//Importing the package for taking input

public class AddElmOfArray {

//Body of the main function of the program

public static void main(String args[]){

//Taking the size of the array From the user

System.out.println("Enter the required size of the array :: ");

Scanner s = new Scanner(System.in);

int size = s.nextInt();

int arry[] = new int [size];

int sum = 0;

int i;

//Taking the elements of the arry from the user.

System.out.println("Enter the elements of the array one by one ");

//Using the for loop to take the input elements

for( i=0; i<size; i++){

arry[i] = s.nextInt();

sum = sum + arry[i];

}

//Printing the elements of the array

System.out.println("Elements of the array are: "+Arrays.toString(arry));

//Printing the sun of the elements of the array.

System.out.println("Sum of the elements of the array ::"+sum);

}

Output:-

In the above program, we have first initialized the required variable.

arry[] = it will hold the integer value of the input elements.
i = it will hold the integer value.
Size = it will hold the integer value of the input.

Input size of the array from the user.

Taking the elements of the array from the user.

Program Logic Code for the adding of the elements of the array.

Printing output array after adding the element to the array.

Java Program to Remove Element From Array

Java Program to Remove the elements of an Array

In this tutorial, we will learn to create a Java program that will remove the elements of an Array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Program description to find Remove the Elements of an Array.

In this program, we will first take the input array size and the elements from the user. Then we will take a position to remove an element of the array using a for-loop. At last, we will print the array to the user using the print function.

With the help of this program, we can Remove the Elements of an Array.

Program Code:-

import java.util.*;//importing the package for the program.
 
class Arry
{  
 public static void main(String args[])
 {
 Scanner sc = new Scanner(System.in);
   //Declaring the required variable for the program.
   int i,n,ps ;
 //Taking the number of element for the array 
 System.out.println("Enter the number of elements:") ;
 n = sc.nextInt();
 int[] a = new int[n];
    //Taking the elements of the array
     System.out.println("Enter the elements") ;
     for(i=0;i<n;i++)
     {
         a[i] = sc.nextInt();
     }
 //Taking the position to delete the element
 System.out.println("Enter the position of the number which is to be deleted");
 ps = sc.nextInt();
    
 for(i=ps;i<n-1;i++)
     	{
         a[i]=a[i+1];
     }
     n=n-1;
 //Printing the array after the deletion.
 System.out.println("\nOn deleting new array we get is\n");
     for(i=0;i<n;i++) 
     {
         System.out.println("a["+i+"] = "+a[i]);
     }
 }
}

import java.util.*;//importing the package for the program.

class Arry

{

public static void main(String args[])

{

Scanner sc = new Scanner(System.in);

//Declaring the required variable for the program.

int i,n,ps ;

//Taking the number of element for the array

System.out.println("Enter the number of elements:") ;

n = sc.nextInt();

int[] a = new int[n];

//Taking the elements of the array

System.out.println("Enter the elements") ;

for(i=0;i<n;i++)

{

a[i] = sc.nextInt();

}

//Taking the position to delete the element

System.out.println("Enter the position of the number which is to be deleted");

ps = sc.nextInt();

for(i=ps;i<n-1;i++)

{

a[i]=a[i+1];

}

n=n-1;

//Printing the array after the deletion.

System.out.println("\nOn deleting new array we get is\n");

for(i=0;i<n;i++)

{

System.out.println("a["+i+"] = "+a[i]);

}

Output:-

In the above program, we have first initialized the required variable.

ps = it will hold the integer value of the input elements.
i = it will hold the integer value.
n = it will hold the integer value of the input.

Input size and the elements of the array from the user.

Program Logic Code for the Remove of the elements of the array.

Printing the array after deletion of the element.

Java Program to Add Element to Array

In this tutorial, we will learn to create a Java program that will add the elements to an Array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Algorithm:-

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the size of the array.

Step 4 :- Taking the elements of the array.

Step 5 :- Taking the extra element for the array.

Step 6 :- Adding that element in the array.

Step 7 :- Printing the array after insertion.

Step 8 :- End the program.

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the size of the array.

Step 4 :- Taking the elements of the array.

Step 5 :- Taking the extra element for the array.

Step 6 :- Adding that element in the array.

Step 7 :- Printing the array after insertion.

Step 8 :- End the program.

Program description to find add the Elements of an Array.

In this program, we will first take the input array size and the elements from the user. Then we will add all the elements in the array using a for-loop. At last, we will print the added array to the user.

With the help of this program, we can add the Elements of an Array.

Program Code:-

import java.util.Scanner;
class AddingElement 
{
    public static void main(String[] args) 
    {
        //Declaring the required variable for the program
        int len, p,ele;
        Scanner sc = new Scanner(System.in);
        //Taking the size of the array from the user.
        System.out.print("Enter length of an array:");
        len = sc.nextInt();
        int arr[] = new int[len+1];
        //Taking the elements of the array from the user.
        System.out.println("Enter "+len+" elements:");
        for(int i = 0; i < len; i++)
        {
            arr[i] = sc.nextInt();
        }
        //Taking the element to add in the array from the user.
        System.out.print("Enter the element which you want to insert:");
        ele = sc.nextInt();
        arr[len] = ele;
        //Printing the array after inserting the elements.
        System.out.print("After inserting : ");
        for(int i = 0; i <len; i++)
        {
            System.out.print(arr[i]+",");
        }
        System.out.print(arr[len]);
        
    }
}

import java.util.Scanner;

class AddingElement

{

public static void main(String[] args)

{

//Declaring the required variable for the program

int len, p,ele;

Scanner sc = new Scanner(System.in);

//Taking the size of the array from the user.

System.out.print("Enter length of an array:");

len = sc.nextInt();

int arr[] = new int[len+1];

//Taking the elements of the array from the user.

System.out.println("Enter "+len+" elements:");

for(int i = 0; i < len; i++)

{

arr[i] = sc.nextInt();

}

//Taking the element to add in the array from the user.

System.out.print("Enter the element which you want to insert:");

ele = sc.nextInt();

arr[len] = ele;

//Printing the array after inserting the elements.

System.out.print("After inserting : ");

for(int i = 0; i <len; i++)

{

System.out.print(arr[i]+",");

}

System.out.print(arr[len]);

}

Output:-

In the above program, we have first initialized the required variable.

ele = it will hold the integer value.
len = it will hold the integer value.
i = it will hold the integer value.

Input size and the elements of the array from the user.

Program Logic Code for the adding of the element in the array.

Printing array after adding the element in the array.

Java Program to Insert Element at Specific Position in Array

In this tutorial, we will learn to create a Java program that will insert an Element at a Specific Position in an Array using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Algorithm:-

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the size of the array.

Step 4 :- Taking the extra element's position of the array.

Step 5 :- Taking the extra element for the array.

Step 6 :- Adding that element in the array.

Step 7 :- Printing the array after insertion.

Step 8 :- End the program.

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the size of the array.

Step 4 :- Taking the extra element's position of the array.

Step 5 :- Taking the extra element for the array.

Step 6 :- Adding that element in the array.

Step 7 :- Printing the array after insertion.

Step 8 :- End the program.

Program description:-

In this program, We will first take the size and the elements of the array. Then We will take the new element and its position from the user. At last, we will add the element in the array and will print that to the user.

With the help of this program, we can insert an Element at a Specific Position in the Array.

Program Code:-

import java.util.Scanner;
public class Insert_Array 
{
    public static void main(String[] args) 
    {
        //Declaring the required variables for the program.
        int n, positionn, x;
        //n = it will hold the input value for size of array
        
        Scanner s = new Scanner(System.in);
        //Taking the size of the array from the user.
        System.out.print("Enter no. of elements you want in array:");
        n = s.nextInt();
        int a[] = new int[n+1];
        //Taking the element of the array.
        System.out.println("Enter all the elements:");
        for(int i = 0; i < n; i++)
        {
            a[i] = s.nextInt();
        }
        //Taking the position of the new element
        System.out.print("Enter the position where you want to insert element:");
        positionn = s.nextInt();
        //Taking the new element
        System.out.print("Enter the element you want to insert:");
        x = s.nextInt();
        for(int i = (n-1); i >= (positionn-1); i--)
        {
            a[i+1] = a[i];
        }
        a[positionn-1] = x;
        //Printin the array to the user.
        System.out.print("After inserting:");
        for(int i = 0; i < n; i++)
        {
            System.out.print(a[i]+",");
        }
        System.out.print(a[n]);
    }
}

import java.util.Scanner;

public class Insert_Array

{

public static void main(String[] args)

{

//Declaring the required variables for the program.

int n, positionn, x;

//n = it will hold the input value for size of array

Scanner s = new Scanner(System.in);

//Taking the size of the array from the user.

System.out.print("Enter no. of elements you want in array:");

n = s.nextInt();

int a[] = new int[n+1];

//Taking the element of the array.

System.out.println("Enter all the elements:");

for(int i = 0; i < n; i++)

{

a[i] = s.nextInt();

}

//Taking the position of the new element

System.out.print("Enter the position where you want to insert element:");

positionn = s.nextInt();

//Taking the new element

System.out.print("Enter the element you want to insert:");

x = s.nextInt();

for(int i = (n-1); i >= (positionn-1); i--)

{

a[i+1] = a[i];

}

a[positionn-1] = x;

//Printin the array to the user.

System.out.print("After inserting:");

for(int i = 0; i < n; i++)

{

System.out.print(a[i]+",");

}

System.out.print(a[n]);

}

Output:-

In the above program, we have first initialized the required variable.

positionn = it will hold the integer value for the position.
n = it will hold the integer value.
i = it will hold the integer value.

Input size and the elements of the array from the user.

Taking the new element and its position from the user to add in the array.

Printing array after adding the element in the array.

Java Program to Merge Two Sorted Arrays

In this tutorial, we will learn to create a Java program that will Merge Two sorted Arrays using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

Algorithm:-

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the array one and two from the user.

Step 4 :- Merging the two arrays.

Step 5 :- Printing the merged array to the user.

Step 6 :- End the program.

Step 1 :- Initialize the program.

Step 2 :- Declaring the variables for the program.

Step 3 :- Taking the array one and two from the user.

Step 4 :- Merging the two arrays.

Step 5 :- Printing the merged array to the user.

Step 6 :- End the program.

Merging Two Arrays.

In this program, First, we will declare arrays one and two for the program. Then we will find the combined length for the merged array. After that, we will merge both the array. Then we will print the elements of the merged two sorted arrays to the user with the help of the print function.

With the help of this program, we can merge Two Sorted Arrays in an Array.

Program Code:-

//Java Program to Merge Two Sorted Arrays

import java.util.Arrays;

public class MergeSortedArray{
    //Body of the main function.
	public static void main(String[] args)
	{
	    // Declaring the variables for the program.
		// first array.
		int[] x = { 12, 21, 32, 45, 56 };

		// second array.
		int[] y = { 55, 66, 98, 78, 85 };

		// determines length of firstArray.
		int arry1 = x.length;
		
		// determines length of secondArray
		int arry2 = y.length;
		
		// resultant array size
		int arrymerged = arry1 + arry2;

		// create the resultant array
		int[] z = new int[arrymerged];

		// using the pre-defined function arraycopy
		System.arraycopy(x, 0, z, 0, arry1);
		System.arraycopy(y, 0, z, arry1, arry2);

		// prints the resultant array
		//Printing the array 1 
		System.out.println("Array 1 = ");
		System.out.println(Arrays.toString(x));
		//Printing the array 2 
		System.out.println("Array 2 = ");
		System.out.println(Arrays.toString(y));
		//Printing the merged array
		System.out.println("merged array = ");
		System.out.println(Arrays.toString(z));
	}
}

				
					
				1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43

						//Java Program to Merge Two Sorted Arrays
 
import java.util.Arrays;
 
public class MergeSortedArray{
    //Body of the main function.
	public static void main(String[] args)
	{
	    // Declaring the variables for the program.
		// first array.
		int[] x = { 12, 21, 32, 45, 56 };
 
		// second array.
		int[] y = { 55, 66, 98, 78, 85 };
 
		// determines length of firstArray.
		int arry1 = x.length;
		
		// determines length of secondArray
		int arry2 = y.length;
		
		// resultant array size
		int arrymerged = arry1 + arry2;
 
		// create the resultant array
		int[] z = new int[arrymerged];
 
		// using the pre-defined function arraycopy
		System.arraycopy(x, 0, z, 0, arry1);
		System.arraycopy(y, 0, z, arry1, arry2);
 
		// prints the resultant array
		//Printing the array 1 
		System.out.println("Array 1 = ");
		System.out.println(Arrays.toString(x));
		//Printing the array 2 
		System.out.println("Array 2 = ");
		System.out.println(Arrays.toString(y));
		//Printing the merged array
		System.out.println("merged array = ");
		System.out.println(Arrays.toString(z));
	}
}

					

			

Output:-

In the above program, we have first initialized the required variable.

x = it will hold the integer value.
y = it will hold the integer value.
z = it will hold the integer value.

Finding the size of the arrays.

Program Code to Merge Two Arrays.

Printing output of the program.

Java Program to Merge Two Arrays

In this tutorial, we will learn to create a Java program that will Merge Two Arrays using Java programming.

Prerequisites

Before starting with this tutorial, we assume that you are the best aware of the following Java programming topics:

Operators in Java Programming.
Basic Input and Output function in Java Programming.
Basic Java programming.
For loop in Java programming.
Arithmetic operations in Java Programming.

What is Merging?

The merging means is adding two or more arrays into one. Merging can be done with a simple Java programming code.

Merging Two Arrays.

In this program, First, we will declare arrays one and two for the program. Then we will find the combined length for the merged array. After that, we will merge both the array. Then we will print the elements of the merged array to the user with the help of the print function.

With the help of this program, we can merge Two Arrays in an Array.

Program Code:-

// Java Program to demonstrate merging
// two array using pre-defined method

import java.util.Arrays;

public class Merge2Array {
    //Body of the main function.
	public static void main(String[] args)
	{
	    // Declaring the variables for the program.
		// first array.
		int[] x = { 10, 20, 30, 40 };

		// second array.
		int[] y = { 50, 60, 70, 80 };

		// determines length of firstArray.
		int arry1 = x.length;
		
		// determines length of secondArray
		int arry2 = y.length;
		
		// resultant array size
		int arrymerged = arry1 + arry2;

		// create the resultant array
		int[] z = new int[arrymerged];

		// using the pre-defined function arraycopy
		System.arraycopy(x, 0, z, 0, arry1);
		System.arraycopy(y, 0, z, arry1, arry2);

		// prints the resultant array
		//Printing the array 1 
		System.out.println("Array 1 = ");
		System.out.println(Arrays.toString(x));
		//Printing the array 2 
		System.out.println("Array 2 = ");
		System.out.println(Arrays.toString(y));
		//Printing the merged array
		System.out.println("merged array = ");
		System.out.println(Arrays.toString(z));
	}
}

				
					
				1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

						// Java Program to demonstrate merging
// two array using pre-defined method
 
import java.util.Arrays;
 
public class Merge2Array {
    //Body of the main function.
	public static void main(String[] args)
	{
	    // Declaring the variables for the program.
		// first array.
		int[] x = { 10, 20, 30, 40 };
 
		// second array.
		int[] y = { 50, 60, 70, 80 };
 
		// determines length of firstArray.
		int arry1 = x.length;
		
		// determines length of secondArray
		int arry2 = y.length;
		
		// resultant array size
		int arrymerged = arry1 + arry2;
 
		// create the resultant array
		int[] z = new int[arrymerged];
 
		// using the pre-defined function arraycopy
		System.arraycopy(x, 0, z, 0, arry1);
		System.arraycopy(y, 0, z, arry1, arry2);
 
		// prints the resultant array
		//Printing the array 1 
		System.out.println("Array 1 = ");
		System.out.println(Arrays.toString(x));
		//Printing the array 2 
		System.out.println("Array 2 = ");
		System.out.println(Arrays.toString(y));
		//Printing the merged array
		System.out.println("merged array = ");
		System.out.println(Arrays.toString(z));
	}
}

					

			

Output:-

In the above program, we have first initialized the required variable.

x = it will hold the integer value.
y = it will hold the integer value.
z = it will hold the integer value.

Finding the size of the arrays.

Program Code to Merge Two Arrays.

Printing output of the program.