Input in java programming (console input )

Java Input to the console

There are many types of inputs, But what today we are going to discuss is ,,, When a user types something from the keyboard to the java console this is called input, More types of inputs are text, video ,audio and action etc.

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Syntax for java console inputs 

1. When we give input to the java console , We should include a library in that class ( where we create our input ) at the top

import java.util.Scanner; 

2. Create a Scanner object That way you can scan a data carefully And put System.in in the middle of round braces , So you can get the data from the user using this , As follow

  Scanner scan = new Scanner(System.in);

3.

scan.nextLine();

is use to give input in text form.Here scan is just the name of the Scanner object , we created above. While nextLine(); is essentially important to be given for inputs line.

4.

nextInt();

is use to give inputs in numbers

5.

nextDouble();

is use to give input in fraction numbers .That includes dot point.

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Example 1 : Write down a program in which as a student his name use a string , ask for his/her marks use an integer and also ask for his/her % percentage use a double.

And then display back to him/her , his/her name , marks and percentage.

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package clock;

import java.util.Scanner;

public class main {

    public static void main(String[]args){

Scanner scan = new Scanner(System.in);

/*declare 3 variable

 *a string

 * an integer

 * and

 * a double

 */

    String name;

    int marks;

    double percentage;

   

  System.out.println("what is your name?");

 

  /*take name in the string*/

  name = scan.nextLine();

 

  System.out.println("How much marks you got?");

  /* take marks in integer*/

 

  marks = scan.nextInt();

   

  System.out.println("What is your percentage?");

 

  /*take percentage in double*/

 

 percentage = scan.nextDouble();

 /*display him/her

  * name ,

  *  marks

  *  and result  */

System.out.println("Your name is : ");

System.out.println(name + "\n");

System.out.println("You got : ");

System.out.println(marks +" marks\n");

System.out.println("Your percentage is : ");

System.out.println(percentage);

    }

   

}

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Out Put

what is your name?

abdul wahab

How much marks you got?

30

What is your percentage?

30.2

Your name is :

abdul wahab

You got :

30 marks

Your percentage is :

30.2