Java Gui坐标绝对布局

JFrame 要setLayout 为null

setSize 设置大小

setLocation 设置位置

下面是自己准备做的一个QQ群助手，抓的是qun.qq.com的协议

这是界面设计图

运行效果图

代码

import java.awt.TextArea;
import java.awt.Toolkit;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTextArea;

public class QQGroupHelper extends JFrame {

	public QQGroupHelper ()
	{
		initUI();
	}

	JPanel urcode ;

	JList grouplist;
	JList memlist;

	JLabel name;
	JLabel qq;
	TextArea logs ;
	private void initUI() {
		int scrw = Toolkit.getDefaultToolkit().getScreenSize().width;
		int scrh = Toolkit.getDefaultToolkit().getScreenSize().height;
		this.setLocation(scrw/2,scrh/2);

		this.setSize(600,600);

		//坐标的绝对布局，设成null
		this.setLayout(null);

		urcode = new JPanel();
		urcode.setSize(200,200);
		urcode.setLocation(0,0);
		urcode.setVisible(true);

		grouplist = new JList();
		grouplist.setSize(200,400);
		grouplist.setLocation(0,200);
		grouplist.setVisible(true);

		name = new JLabel();
		name.setSize(400,50);
		name.setLocation(200,0);
		name.setText("Name");

		qq = new JLabel();
		qq .setSize(400,50);
		qq .setLocation(200,50);
		qq .setText("@@ number");

		logs = new TextArea();
		logs.setSize(400,200);
		logs.setLocation(200,100);
		logs.setVisible(true);
		logs.setText("There is log message");

		memlist = new JList();
		memlist.setSize(400,400);
		memlist.setLocation(200,200);

		this.add(urcode);
		this.add(grouplist);
		this.add(name);
		this.add(qq);
		this.add(logs);
		this.add(memlist);

	}

}