When you press the arrow on your keyboard, you are creating a program where the displayed frame moves 10 times in that direction.The input of the keyboard is detected, but the frame does not move.How can I move?The program you created below.
// Import File
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
// Main Class
public class framing
{
int x = 100;
inty = 100;
// Main Method
public static void main (String[]args)
{
framing test = new framing();
}
// constructor
public framing()
{
// Basic frame configuration.
JFrame frame = new JFrame();
frame.setSize(250,250);
frame.setLocation(x,y);
frame.setTitle("Key_test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
// Keyboard Listener Settings
// Register to receive keyboard input in frame
frame.addKeyListener(newKeyboard_input());
}
// Class for Keyboard
class Keyboard_input implements KeyListener
{
public void keyPressed (KeyEvente)
{
System.out.println("keyPressed.");
switch(e.getKeyCode()) {
caseKeyEvent.VK_UP:y=y-10;break;
caseKeyEvent.VK_RIGHT: x=x+10;break;
caseKeyEvent.VK_DOWN —y=y+10;break;
caseKeyEvent.VK_LEFT:x=x-10;break;
}
}
public void keyReleased (KeyEvente)
{
// Display messages for keyReleased
System.out.println("keyReleased.");
}
public void keyType (KeyEvente)
{
// Display messages for keyTyped
System.out.println("keyType.");
}
}}
I think you can call the setLocation method of the frame (JFrame object) again to update the location.
public void keyPressed (KeyEvente)
{
System.out.println("keyPressed.");
// current location
Point point = frame.getLocation();
intx = point.x;
inty = point.y;
switch(e.getKeyCode()) {
caseKeyEvent.VK_UP:y=y-10;break;
caseKeyEvent.VK_RIGHT: x=x+10;break;
caseKeyEvent.VK_DOWN —y=y+10;break;
caseKeyEvent.VK_LEFT:x=x-10;break;
}
frame.setLocation(x,y);
}
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