如何检测用户何时真正释放了 Java 中的密钥？

Question

If you press a key, the player goes forward, but if you hold the key a bit longer the player moves too long in the same direction. I am using this code to check what key the player is pressing:

private void KeyPressed(java.awt.event.KeyEvent evt) {

    key = evt.getKeyCode();

        if (key == KeyEvent.VK_W) {

            direction = 1;

            PlayerMovement();
        }
        if (key == KeyEvent.VK_S) {

            direction = 2;

            PlayerMovement();
        }
        if (key == KeyEvent.VK_D) {

            direction = 3;

            PlayerMovement();
        }
        if (key == KeyEvent.VK_A) {
            direction = 4;
            PlayerMovement();

        }
}

Answer 1

use keyReleased !!! if you need to move the player one step in evry key press keyPressed keeps running when the user is pressing the key

use THREADS because here you are using the program but if you start a thread you can do what ever you want the program still works fine learn about thread because game are all about threads

private class Walk_thread extends java.lang.Thread{

public void run(){
//call the walk methode here
PlayerMovement();
}
}

so when the key is pressed create a thread that call playermovement

if (key == KeyEvent.VK_W) {

        direction = 1;
new Walk_thread().start();//here the method run is called 
System.out.println("program will not stop the thread is walking and the program is continued too");
    }