import java.awt.event.MouseEvent;
import java.awt.Point;
import java.awt.event.MouseMotionAdapter;
import java.awt.Toolkit;
import java.awt.Dimension;public class Frame1 extends JFrame {
private Point pressedPt;
public Frame1() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setTitle("Frame Title");
this.setSize(400, 300);
this.setUndecorated(true);
this.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
pressedPt = e.getPoint();
}
});
this.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
JFrame frame = (JFrame) e.getSource();
Point location = frame.getLocation();
int x = e.getX() - pressedPt.x + location.x;
int y = e.getY() - pressedPt.y + location.y;
frame.setLocation(x, y);
}
});
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = this.getSize();
this.setLocation( (screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
}
}
import java.awt.Point;
import java.awt.event.MouseMotionAdapter;
import java.awt.Toolkit;
import java.awt.Dimension;public class Frame1 extends JFrame {
private Point pressedPt;
public Frame1() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setTitle("Frame Title");
this.setSize(400, 300);
this.setUndecorated(true);
this.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
pressedPt = e.getPoint();
}
});
this.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
JFrame frame = (JFrame) e.getSource();
Point location = frame.getLocation();
int x = e.getX() - pressedPt.x + location.x;
int y = e.getY() - pressedPt.y + location.y;
frame.setLocation(x, y);
}
});
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = this.getSize();
this.setLocation( (screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
}
}
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