Thread: how to know user pressed a key in the keyboard

Originally Posted by Json

Maybe use the Scanner class.

// Json

Something like this?

import java.util.Scanner;
 
public class Cilang {
 
    /**
     * JavaProgrammingForums.com
     */
    public static void main(String[] args) {
 
        System.out.println("Java Programming Forums");
        System.out.println("Continue? (y/n)");
        Scanner sc = new Scanner(System.in);
 
        if(sc.next().equals("y")){
            DoSomething();
        }else{
            System.out.println("Bye!");
        }
 
 
    }
 
    public static void DoSomething(){        
        System.out.println("Hello World!");        
    }    
}

Only problem with using the Scanner class like this is you have to press Enter for it to register.

Originally Posted by Freaky Chris

*cough* JNI.

What a surprise!!

Java Native Interface - Wikipedia, the free encyclopedia

excuse me ., its not related on this post .. but i want to ask something.

i modified javaPF's reply(code) about this thread..

public class Cilang {
 
    /**
     * JavaProgrammingForums.com
     */
    Scanner sca = new Scanner(System.in);
    public static void main(String[] args) {
 
        System.out.println("Java Programming Forums");
        System.out.println("Continue? (y/n)");
        Scanner sc = new Scanner(System.in);
 
        String input = sc.next();
 
        if (input == "y"){
            DoSomething();
        }else{
            System.out.println("Bye!");
        }
 
 
    }
 
    public static void DoSomething(){
        System.out.println("Hello World!");
    }
}

i just used some boolean expression THAT IF input has a value which is 'y' then it will do the statement in the if block,

but why isnt running?

im just trying to apply some logic behind that... (i.e. if i entered 'y' then pop it up)

but i ended up in error
it only prints the ELSE statement "bye"