java界面设计(页面元素组织)

package test;
import java.awt.Button;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.*;
public class test
{
 JFrame frame;  
 JPanel panel;
 GridBagLayout gridbag;
 GridBagLayout gridbag2;
 
  protected void makebutton(String name,GridBagLayout gridbag, GridBagConstraints c) {
          Button button = new Button(name);
          gridbag.setConstraints(button, c);
          panel.add(button);
      }
 void init(String title)
 {
  frame = new JFrame(title);
  try
  {
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  }catch(Exception e){}
  frame.setSize(500,400);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.setVisible(true);
 }
 
 void build()
 {
  gridbag = new GridBagLayout();
  gridbag2 = new GridBagLayout();
  GridBagConstraints c = new GridBagConstraints();
  GridBagConstraints c2 = new GridBagConstraints();
  panel = new JPanel();
  
  frame.setFont(new Font("simsun", Font.PLAIN, 14));
  frame.getContentPane().setLayout(gridbag);
  panel.setLayout(gridbag2);
  
  //c.fill = GridBagConstraints.BOTH;//按水平、垂直填充组件的显示区
  //c.weightx = 1.0;
  //makebutton("按钮1", gridbag, c);
  //makebutton("按钮2", gridbag, c);
  c2.gridx = 0;
  c2.gridy = 0;
  makebutton("5",gridbag2,c2);
  c2.gridx = 5;
  c2.gridy = 1;
  makebutton("1",gridbag2,c2);
  c2.gridx = 7;
  c2.gridy = 2;
  makebutton("2",gridbag2,c2);
  c2.gridx = 5;
  c2.gridy = 3;
  makebutton("3",gridbag2,c2);
  
  JButton testButton = new JButton("test");
  c2.gridx = 9;
  c2.gridy = 10;
  //gridbag2.setConstraints(testButton,c2);
  panel.add(testButton,c2);
  c2.gridx = 0;
  c2.gridy = 0;
  frame.getContentPane().add(panel,c2);
 }
 void cleanUp()
 {
     //frame.setVisible(true);
     frame.show();
 }
 public static void main(String[] args)
 {
  test t = new test();
  t.init("yinxing");
  t.build();
  t.cleanUp();
 }
}