java中JFrame中使控件居中问题

Question

import javax.swing.*;
import java.awt.*;
public class Test {
public static void main(String args[]){
JFrame frame=new JFrame("测试");

JButton button1=new JButton("位置");
frame.setLayout(null);

frame.add(button1);
frame.setBounds(100,100,300,300);

button1.setBounds(120,136,60,28);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);

}
}

Answer 1

你可以试一下用面板Panel来设置控件居中
例如：
//程序文件名UsePanel.java
import java.awt.*;
import java.applet.*;
import java.applet.Applet;
public class UsePanel extends Applet
{
....
JButton btnOk = new JButton("确定");
JPanel p1 = new JPanel();
p1.add(btnOk,BorderLayout.CENTER);
....
}