Question

jpanel 网格布局3,3 第三个是空的其他都填满，怎么搞啊？ 例： 1 2 4 5 6 7 8 9

Answer 1

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

public class Calculater
{

public static void main(String [] args){
JPanel frame = new JPanel();

}
}

class JPanel extends JFrame{
public JPanel(){
this.setBounds(300, 300, 300, 300);
this.setLayout(new GridLayout(3, 3));
this.add(new JLabel("1"));
this.add(new JLabel("2"));
this.add(new JLabel(""));
this.add(new JLabel("4"));
this.add(new JLabel("5"));
this.add(new JLabel("6"));
this.add(new JLabel("7"));
this.add(new JLabel("8"));
this.add(new JLabel("9"));
this.show();
}
}