Program to read and print user input(String) for an array in Java

read and print user input

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Program to read and print user input(String) for an array in Java

In this article, we will discuss the concept of Program to read and print user input(String) for an array in Java

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

Code to input and print Strings of an array

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

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

Program 1

import java.util.Scanner;
public class StringArrayInOutfor{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("How many stuents on your class: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  String[] names=new String[len];
  
  //initializing value to the array
  System.out.println("\n******Initializing Strings of the array******");
  System.out.println("Enter "+names.length+" names of your students");
  
  for(int i=0;  i<names.length; i++){
    System.out.print("Enter name of student for index names["+i+"]:");
    names[i]=sc.next();
     //using the for loop to initializing array
  }
  
  //displaying the array
  System.out.println("\n******displaying given student names******");
  System.out.println("you entered name of "+names.length+" students");
  
  for(int i=0; i<names.length; i++){
  System.out.print("you Entered name of student for index names["+i+"]:");
    //display entered strings using for loop
    System.out.println(names[i]+"\t");
     
  }
}
}

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

How many students on your class: 4

******Initializing Strings of the array******
Enter 4 names of your students
Enter name of student for index names[0]:Mohan
Enter name of student for index names[1]:Rehan
Enter name of student for index names[2]:Selan
Enter name of student for index names[3]:Balan

******displaying given student names******
You Entered names of 4 students :
You Enter name of student for index names[0]:Mohan
You Enter name of student for index names[1]:Rehan
You Enter name of student for index names[2]:Selan
You Enter name of student for index names[3]:Balan

Code to read and print Strings of an array using while loop

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

Program 2

import java.util.Scanner;
public class StringArrayInOutWhile{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("How many stuents on your class: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  String[] names=new String[len];
  
  //initializing value to the array
  System.out.println("\n******Initializing Strings of the array******");
  System.out.println("Enter "+names.length+" names of your students");
  
  int i=0; 
  while(i<names.length){
    System.out.print("Enter name of student for index names["+i+"]:");
    names[i]=sc.next();
     i++;
     //using the while loop to initializing array
  }
  
  //displaying the array
  System.out.println("\n******displaying given student names******");
  System.out.println("you enterd name of "+names.length+" students");
  i=0;
  while( i<names.length){
  System.out.print("you Entered name of student for index names["+i+"]:");
    //display entered strings using while loop
    System.out.println(names[i]+"\t");
      i++;
  }
}
}

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

How many students on your class: 5

******Initializing Strings of the array******
Enter 5 names of your students
Enter name of student for index names[0]:Mathi
Enter name of student for index names[1]:Mala
Enter name of student for index names[2]:Malar
Enter name of student for index names[3]:Mangai
Enter name of student for index names[4]:Maalathi

******displaying given student names******
You Entered names of 5 students :
you Entered name of student for index names[0]:Mathi
You Entered name of student for index names[1]:Mala
You Entered name of student for index names[2]:Malar
You Entered name of student for index names[3]:Mangai
You Entered name of student for index names[4]:Maalathi

Code to read and print Strings of an array using do-while loop

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

Program 2

import java.util.Scanner;
public class StringArrayInOutDoWhile{
public static void main(String args[]){
//scanner class to read input from the user
  Scanner sc=new Scanner(System.in);
  System.out.print("How many stuents on your class: ");
  //user input the array length
  int len=sc.nextInt();//Reading the given array length
  //Declaring and creating array
  String[] names=new String[len];
  
  //initializing value to the array
  System.out.println("\n******Initializing Strings of the array******");
  System.out.println("Enter "+names.length+" names of your students");
  
  int i=0; 
  do{
    System.out.print("Enter name of student for index names["+i+"]:");
    names[i]=sc.next();
     i++;
     //using the do-while loop to initializing array
  }while(i<names.length);
  
  //displaying the array
  System.out.println("\n******displaying given student names******");
  System.out.println("you enterd name of "+names.length+" students");
  i=0;
  do{
  System.out.print("you Entered name of student for index names["+i+"]:");
    //display entered strings using do-while loop
    System.out.println(names[i]+"\t");
      i++;
  }while( i<names.length);
}
}

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

How many students on your class: 3

******Initializing Strings of the array******
Enter 3 names of your students
Enter name of student for index names[0]:Murugan
Enter name of student for index names[1]:Soruban
Enter name of student for index names[2]:Abinayan


******displaying given student names******
You Entered names of 3 students :
you Entered name of student for index names[0]:Murugan
You Entered name of student for index names[1]:Soruban
You Entered name of student for index names[2]:Abinayan

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