package cn.homework;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Demo_second {
/**
* @param args
*/
public static void main(String[] args) {
JFrame jf = new JFrame("我的窗口");
jf.setSize(500, 400);
jf.setLocation(450, 200);
jf.setLayout(new FlowLayout());
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton jb = new JButton("按钮");
jb.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
System.out.println("好开心");
}
});
jf.add(jb);
jf.setVisible(true);
}
}
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