gridbaglayout怎么实现聊天界面？？

package swing;

import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SpringLayout.Constraints;

public class chatwin {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
JFrame frame=new JFrame();
Container c=frame.getContentPane();
JPanel panel=new JPanel();
GridBagLayout bg=new GridBagLayout();
panel.setLayout(bg);
GridBagConstraints bgc=new GridBagConstraints();

JLabel label=new JLabel("显示消息");
bgc.gridx=0;
bgc.gridy=0;
//bgc.setAnchor();
//bgc.gridwidth=2;
bgc.weightx=100;
bgc.weighty=100;
panel.add(label,bgc);

JLabel label2=new JLabel("在线好友");
bgc.gridx=1;
bgc.gridy=0;
//bgc.setAnchor();
//bgc.gridwidth=2;
bgc.weightx=100;
bgc.weighty=100;
panel.add(label2,bgc);

JTextArea area1=new JTextArea();
area1.setLineWrap(true);
JScrollPane sp=new JScrollPane(area1);
bgc.gridx=0;
bgc.gridy=1;
//bgc.setAnchor();
bgc.weightx=100;
bgc.weighty=100;
panel.add(area1,bgc);

String item[]={"ddd","eee","ttt","bbb"};
JList list=new JList(item);
bgc.gridx=1;
bgc.gridy=1;
//bgc.setAnchor();
bgc.fill=GridBagConstraints.BOTH;
//bgc.gridwidth=2;
bgc.weightx=100;
bgc.weighty=100;
panel.add(list,bgc);

JTextArea area2=new JTextArea();
area2.setLineWrap(true);
JScrollPane sp2=new JScrollPane(area2);
bgc.gridx=0;
bgc.gridy=2;
//bgc.setAnchor();
bgc.gridwidth=2;
bgc.weightx=100;
bgc.weighty=100;
bgc.fill=GridBagConstraints.BOTH;
panel.add(area2,bgc);

JButton button1=new JButton("sent");
bgc.gridx=0;
bgc.gridy=3;
//bgc.setAnchor();
bgc.gridwidth=2;
/* bgc.weightx=100;
bgc.weighty=100;*/
panel.add(button1,bgc);

JButton button2=new JButton("exit");
bgc.gridx=0;
bgc.gridy=3;
//bgc.setAnchor();
bgc.gridwidth=2;
/* bgc.weightx=100;
bgc.weighty=100;*/
panel.add(button2,bgc);

frame.add(panel);

frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}

}

用gridbaglayout布局管理器生成一个简单的聊天界面，（用手写代码）第一次用gridbaglayout管理器，不是很理解，实现不了如图的效果。。。。。
请大家指点指点，要怎么去实现啊？？学习下完整的源代码。。。幸苦大家了！！！！

13 个解决方案

#1

界面效果:
[img=http://hi.csdn.net/space-6758047-do-album-picid-971982-goto-down.html][/img]

#2

http://hi.csdn.net/space-6758047-do-album-picid-971986.html
这是图片的链接地址

#3

急需大家帮帮忙，。，。。谢谢了、。。。。

#4

看了LZ发的界面原图,有一个问题：
是否必须使用GridBagLayout来进行整体布局？
因为根据图片，完全不必要用GridBagLayout来进行布局，当然，也不排除这是个练习GridBagLayout的例子。

#5

嗯。。。想用用GridBagLayout练习布局。。。求代码。。。。。

#6

这个界面，最下面两个按钮不适合放在整体的GridBagLayout布局中

#7

一下代码看是否符合LZ的需求:



package test;


import java.awt.Container;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;


import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.border.TitledBorder;


public class TestGridBagLayout {



	/**

	* @param args

	*/

	public static void main(String[] args) {

		JFrame frame = new JFrame();

		frame.setLocation(450,300);

		Container c = frame.getContentPane();

		JPanel panel=new JPanel();

		panel.setBorder(new TitledBorder(""));

		GridBagLayout bg=new GridBagLayout();

		panel.setLayout(bg);

		GridBagConstraints bgc=new GridBagConstraints();


		Insets insets = new Insets(10,5,0,5);

		bgc.insets = insets ;



		JLabel label=new JLabel("显示消息"); 

		bgc.gridx=0;

		bgc.gridy=0;

		bgc.weightx=0.7;

		bgc.weighty=0.05;

		panel.add(label,bgc);


		JLabel label2=new JLabel("在线好友"); 

		bgc.gridx=1;

		bgc.gridy=0;

		bgc.weightx=0.3;

		panel.add(label2,bgc);


		bgc.fill = GridBagConstraints.BOTH;

		JTextArea area1=new JTextArea(); 

		area1.setBorder(new TitledBorder(""));

		area1.setLineWrap(true);

		JScrollPane sp = new JScrollPane(area1); 

		bgc.gridx=0;

		bgc.gridy=1;

		bgc.weightx=0.7;

		bgc.weighty=0.6;

		panel.add(area1,bgc);


		String item[]={"ddd","eee","ttt","bbb"};

		JList list=new JList(item); 

		list.setBorder(new TitledBorder(""));

		list.setPreferredSize(new Dimension(100,70));

		bgc.gridx=1;

		bgc.gridy=1;

		bgc.weightx=0.3;

		panel.add(list,bgc);


		JTextArea area2=new JTextArea();

		area2.setBorder(new TitledBorder(""));

		area2.setLineWrap(true);

		JScrollPane sp2=new JScrollPane(area2); 

		bgc.gridx=0;

		bgc.gridy=2;

		bgc.gridwidth=2;

		bgc.weighty=0.3;

		panel.add(area2,bgc);


		bgc.gridx=0;

		bgc.gridy=3;

		bgc.gridwidth=2;

		bgc.weighty=0.05;

		JPanel bottomPanel = new JPanel();

		bottomPanel.setLayout(new FlowLayout());

		JButton button1=new JButton("sent"); 

		JButton button2=new JButton("exit"); 

		bottomPanel.add(button1);

		bottomPanel.add(button2);

		panel.add(bottomPanel,bgc);


		c.add(panel);


		frame.pack();

		frame.setSize(500,300);

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		frame.setVisible(true);

	}

}

#8

谢谢哈。。。。。在你的基础上修改了一下、、、但还是有一个功能无法实现。。希望在上下两个文本区域增加分割条JSplitPane，用户可以上下拉动改变两个文本区域的大小。。。。
是不是要分别设置上下两个面板？那原来的位置，特别下面文本区域的位置是否会改变啊？求代码。。。。

package swing;



import java.awt.Container;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;


import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.border.TitledBorder;


public class chatwin {



    /**

    * @param args

    */

    public static void main(String[] args) {

        JFrame frame = new JFrame();

        frame.setLocation(450,300);

        Container c = frame.getContentPane();

        JPanel panel=new JPanel();

        panel.setBorder(new TitledBorder(""));

        GridBagLayout bg=new GridBagLayout();

        panel.setLayout(bg);

        GridBagConstraints bgc=new GridBagConstraints();

    

        Insets insets = new Insets(10,5,0,5);

        bgc.insets = insets ;

        

        

        JLabel label=new JLabel("显示消息"); 

        bgc.gridx=0;

        bgc.gridy=0;

        //bgc.weightx=100;

        //bgc.weighty=100;

        //bgc.anchor=GridBagConstraints.NORTH;

        panel.add(label,bgc);

    

        JLabel label2=new JLabel("在线好友"); 

        bgc.gridx=1;

        bgc.gridy=0;

        //bgc.weightx=100;

        //bgc.weighty=0.7;

        //bgc.anchor=GridBagConstraints.NORTH;

        panel.add(label2,bgc);

    

        bgc.fill = GridBagConstraints.BOTH;

        JTextArea area1=new JTextArea(); 

        area1.setBorder(new TitledBorder(""));

        area1.setLineWrap(true);

        area1.setEditable(false);

        JScrollPane sp = new JScrollPane(area1); 

        bgc.gridx=0;

        bgc.gridy=1;

        bgc.weightx=100;

        bgc.weighty=100;

        panel.add(sp,bgc);

    

        String item[]={"ddd","eee","ttt","bbb"};

        JList list=new JList(item); 

        list.setBorder(new TitledBorder(""));

        list.setPreferredSize(new Dimension(100,70));

        JScrollPane pane=new JScrollPane(list);

        bgc.gridx=1;

        bgc.gridy=1;

        bgc.fill=GridBagConstraints.BOTH;

        bgc.weightx=0;

        bgc.weighty=0;

        panel.add(pane,bgc);

        

        JTextArea area2=new JTextArea();

        area2.setBorder(new TitledBorder(""));

        area2.setLineWrap(true);

        JScrollPane sp2=new JScrollPane(area2); 

        //JScrollPane pane1=new JScrollPane(sp2);

        bgc.gridx=0;

        bgc.gridy=2;

        bgc.gridwidth=2;

        bgc.weightx=0;

        bgc.weighty=0;

        panel.add(sp2,bgc);

        

        bgc.gridx=0;

        bgc.gridy=3;

        bgc.gridwidth=2;

        bgc.weighty=0.05;

        JPanel bottomPanel = new JPanel();

        bottomPanel.setLayout(new FlowLayout());

        JButton button1=new JButton("sent"); 

        JButton button2=new JButton("exit"); 

        bottomPanel.add(button1);

        bottomPanel.add(button2);

        panel.add(bottomPanel,bgc);

        

        c.add(panel);

    

        //frame.pack();

        frame.setSize(500,300);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setVisible(true);

    }

}

#9

要是用SplitPane分隔开上下两个panel的话，还是别用GridBagLayout了，属于自己找麻烦。

#10

GridBagLayout基本就可以不用好多培训课程都说其他三个就够用了

#11

刚开始学这个、、、想用这个试试。。。。

#12

有木有给力点的。。。

#13

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;

public class TankClient extends JFrame {

int x=80,y=80;

public void launch(){
//setLocation(400, 300);
setSize(700,800);
setLocationRelativeTo(null); //jframe居中显示
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false); //jframe不可改变大小
setBackground(Color.YELLOW);
setVisible(true);
Thread t=new Thread(new RunTank());
t.start();
}

//画坦克
public void paint(Graphics g){
Color c=g.getColor();
System.out.println(g);
g.setColor(Color.red);
g.fillOval(x,y, 40, 40);
g.setColor(c);
System.out.println("**********************");
System.out.println(g);
y+=20;
}

//坦克运动
class RunTank implements Runnable{

public void run() {
while(true) {
repaint();
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

public static void main(String[] args) {

TankClient tan= new TankClient();
tan.launch();

}

}

#1