Write a Java program to input and print n elements in an array

Input and output in array

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Write a Java program to input and print n elements in an array

In this article, we will discuss the concept of Write a Java program to input and print n elements in an array

In this post, we are going to learn how to write a program to input and print integer elements in single dimensional array using for, while and do-while loop in Java language

Code to input and print integer of an array

Code to input and print integers of an array using for loop

In this code, we are going to learn how to input and print integer elements in single dimensional array using for loop in Java language

Program 1

import java.util.Scanner;
public class InputPrintArrayInputforB{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("Enter array length: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  int[] arr=new int[len];
  
  //initializing value to the array
  System.out.println("******Initializing elements of the array******");
  System.out.println("Enter "+arr.length+" integer values");
  
  for(int i=0;  i<arr.length; i++){
    System.out.print("Enter value of index arr["+i+"]:");
    arr[i]=sc.nextInt();
     //using the for loop to initializing array
  }
  
  //displaying the array
  System.out.println("\n******displaying given array elements******");
  System.out.println("Entered array elements are");
  
  for(int i=0; i<arr.length; i++){
    System.out.print("You entered value to index of arr["+i+"]:");
    //display entered values using for loop
    System.out.println(arr[i]+"\t");
     
  }
}
}

When the above code is executed it produces the following result

Output 1

Code to input and print integers of an array using while loop

In this code, we are going to learn how to input and print integer elements in single dimensional array using while loop in Java language

Program 1

import java.util.Scanner;
public class InputPrintArraywhileB{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("Enter array length: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  int[] arr=new int[len];
  
  //initializing value to the array
  System.out.println("******Initializing elements of the array******");
  System.out.println("Enter "+arr.length+" integer values");
  int i=0;
  while(i<arr.length){
    System.out.print("Enter value of index arr["+i+"]:");
    arr[i]=sc.nextInt();
     //using the while loop to initializing array
      i++;
  }
  
  //displaying the array
  System.out.println("\n******displaying given array elements******");
  System.out.println("Entered array elements are");
  i=0; 
  while(i<arr.length){
    System.out.print("You entered value to index of arr["+i+"]:");
    //display entered values using while loop
    System.out.println(arr[i]+"\t");
     i++;
     
  }
}
}

When the above code is executed it produces the following result

Output 2

Code to input and print integers of an array using do-while loop

In this code, we are going to learn how to input and print integer elements in single dimensional array using do-while loop in Java language

Program 3

import java.util.Scanner;
public class InputPrintArrayDowhileB{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("Enter array length: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  int[] arr=new int[len];
  
  //initializing value to the array
  System.out.println("******Initializing elements of the array******");
  System.out.println("Enter "+arr.length+" integer values");
  int i=0;
  do{
    System.out.print("Enter value of index arr["+i+"]:");
    arr[i]=sc.nextInt();
     //using the for loop to initializing array
      i++;
  }while(i<arr.length);
  
  //displaying the array
  System.out.println("\n******displaying given array elements******");
  System.out.println("Entered array elements are");
  i=0; 
  do{
    System.out.print("You entered value to index of arr["+i+"]:");
    //display entered values using for loop
    System.out.println(arr[i]+"\t");
     i++;
     
  }while(i<arr.length);
}
}

When the above code is executed it produces the following result

Output 3

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