一下是我的代码,可是程序一运行控制台只打印active(有时候还没),没打印Openedimport java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
public class AwtDemo {
public static void main(String[] args) {
Frame f = new Frame("我的 awt");
f.setSize(500, 400);
f.setLocation(300, 200);
f.setLayout(new FlowLayout());
Button b = new Button("我是一个按钮");
f.add(b);
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
// super.windowClosing(e);
}
public void windowActivated(WindowEvent e) {
System.out.println("active");
}
public void windowOpened(WindowEvent e) {
System.out.println("Opened");
}
});
}
}
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