Java program to accept array input from user using do- while loop

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Java program to accept array input from user using do- while loop

In this article, we will discuss the concept of Java program to accept array input from user using do- while loop

In this post, we are going to learn how to write a program to input elements of an array using do-while loop in Java language

Code to take array input from user

Code to take integer array input using do-while loop – #1

In this code, we are going to learn how to take input array of integer using do-while loop in Java language

Program 1

import java.util.Scanner;
public class TakeArrayInputDowhile{
public static void main(String args[]){
//scanner class object to read input
  Scanner sc=new Scanner(System.in);
  //Declaring and creating array
  int[] arr=new int[6];
  
  //Display dfault value before initialize
  System.out.println("Default value of integer array: ");
  int i=0;
  do{//print default value of integer array using do-while
    System.out.println(arr[i]+"\t");
     i++;
  }while(i<arr.length);
  System.out.println("");//move to next line
  //initializing the array
  System.out.println("******Initializing array******");
  System.out.println("Enter "+arr.length+" integer values");
  i=0; 
  do{//accept array input using do-while
    arr[i]=sc.nextInt();
     i++;
  }while(i<arr.length);
  
  //displaying the array
  System.out.println("\n******displaying array elements******");
  System.out.println("Entered array elements are");
  i=0; 
  do{//print array elements using do-while
    System.out.println(arr[i]+"\t");
     i++;
  }while(i<arr.length);
}
}

When the above code is executed, it produces the following result

Default value of integer array:
0
0
0
0
0
0

******Initializing array******
Enter 6 integer values
111
222
333
444
555
666

******displaying array elements******
Entered array elements are
111
222
333
444
555
666

Code to take String array input using do-while loop – #2

In this code, we are going to learn how to input array of strings using do-while loop in Java language

Program 2

import java.util.Scanner;
public class TakeStringArrayInputDoWhile{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  //Declaring and creating String array
  String[] arr=new String[5];
  
  //Display default value after declaring
  System.out.println("Default values of given String array: ");
  int i=0; 
  do{
    System.out.print(arr[i]+"\t");
    i++;
  }while(i<=arr.length-1);
  //find default String value of the given array
   
  System.out.println("");
  //initializing String value to the array
  System.out.println("******Initializing array******");
  System.out.println("Enter "+arr.length+" String values");
  i=0;
  do{
    arr[i]=sc.nextLine();
     i++;
  }while(i<=arr.length-1);
  //using the do-while loop to initializing array
  
  //displaying the array elements
  System.out.println("\n******displaying array of Strings******");
  System.out.println("Entered Strings are");
  i=0;
  do{
    System.out.print(arr[i]+"\t");
     i++;
  }while(i<=arr.length-1);
}
}

When the above code is executed, it produces the following result

Default value of given String array
null   null   null   null   null

******Initializing array******
Enter 5 String values
Java
php
Python
Ruby
Ada

******displaying array of Strings******
Entered Strings are
Java   php   Python    Ruby    Ada

Code to take character array input using do-while loop – #3

In this code, we are going to learn how to input array of characters using do-while loop in Java language

Program 3

import java.util.Scanner;
public class TakeCharArrayInputdowhile{
public static void main(String args[]){
//scanner object to read input from the user
  Scanner sc=new Scanner(System.in);
  //Declaring and creating character array
  char[] arr=new char[5];
  
  //initializing value to the array
  System.out.println("******Initializing array******");
  System.out.println("Enter characters");
  
  arr=sc.next().toCharArray();
    //Take character input from user

  
  //displaying the array elements
  System.out.println("\n******displaying characters in an array******");
  System.out.println("Entered Characters are");
  int i=0;
  do{
    System.out.print(arr[i]+"\t");
     i++;
  }while(i<arr.length);
}
}

When the above code is executed, it produces the following result

******Initializing array******
Enter characters
Coding

******displaying characters in an array******
Entered characters are
C     o     d     i     n     g

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