import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;

import javax.swing.JButton;
import javax.swing.JFrame;

public class ExampleFrame_03 extends JFrame {

  /**
   * 
   */
  private static final long serialVersionUID = 1L;

  public static void main(String args[]) {
    ExampleFrame_03 frame = new ExampleFrame_03();
    frame.setVisible(true);
  }

  public ExampleFrame_03() {
    super();
    setTitle("使用网格组布局管理器");
    getContentPane().setLayout(new GridBagLayout());
    setBounds(100, 100, 500, 170);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final JButton button = new JButton("A");
    final GridBagConstraints gridBagConstraints = new GridBagConstraints();
    gridBagConstraints.gridy = 0;// 起始点为第1行
    gridBagConstraints.gridx = 0;// 起始点为第1列
    gridBagConstraints.weightx = 10;// 第一列的分布方式为10%
    gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
    getContentPane().add(button, gridBagConstraints);

    final JButton button_1 = new JButton("B");
    final GridBagConstraints gridBagConstraints_1 = new GridBagConstraints();
    gridBagConstraints_1.gridy = 0;
    gridBagConstraints_1.gridx = 1;
    // 设置组件左侧的最小距离
    gridBagConstraints_1.insets = new Insets(0, 5, 0, 0);
    gridBagConstraints_1.weightx = 20;// 第一列的分布方式为20%
    gridBagConstraints_1.fill = GridBagConstraints.HORIZONTAL;
    getContentPane().add(button_1, gridBagConstraints_1);

    final JButton button_2 = new JButton("C");
    final GridBagConstraints gridBagConstraints_2 = new GridBagConstraints();
    gridBagConstraints_2.gridy = 0;// 起始点为第1行
    gridBagConstraints_2.gridx = 2;// 起始点为第3列
    gridBagConstraints_2.gridheight = 2;// 组件占用两行
    gridBagConstraints_2.insets = new Insets(0, 5, 0, 0);
    gridBagConstraints_2.weightx = 30;// 第一列的分布方式为30%
    // 同时调整组件的宽度和高度
    gridBagConstraints_2.fill = GridBagConstraints.BOTH;
    getContentPane().add(button_2, gridBagConstraints_2);

    final JButton button_3 = new JButton("D");
    final GridBagConstraints gridBagConstraints_3 = new GridBagConstraints();
    gridBagConstraints_3.gridy = 0;
    gridBagConstraints_3.gridx = 3;
    gridBagConstraints_3.gridheight = 4;
    // 设置组件左侧和右侧的最小距离
    gridBagConstraints_3.insets = new Insets(0, 5, 0, 5);
    gridBagConstraints_3.weightx = 40;// 第一列的分布方式为40%
    gridBagConstraints_3.fill = GridBagConstraints.BOTH;
    getContentPane().add(button_3, gridBagConstraints_3);

    final JButton button_4 = new JButton("E");
    final GridBagConstraints gridBagConstraints_4 = new GridBagConstraints();
    gridBagConstraints_4.gridy = 1;
    gridBagConstraints_4.gridx = 0;
    gridBagConstraints_4.gridwidth = 2;// 组件占用两列
    // 设置组件上方的最小距离
    gridBagConstraints_4.insets = new Insets(5, 0, 0, 0);
    // 只调整组件的宽度
    gridBagConstraints_4.fill = GridBagConstraints.HORIZONTAL;
    getContentPane().add(button_4, gridBagConstraints_4);

    final JButton button_5 = new JButton("F");
    final GridBagConstraints gridBagConstraints_5 = new GridBagConstraints();
    gridBagConstraints_5.gridy = 2;// 起始点为第3行
    gridBagConstraints_5.gridx = 0;// 起始点为第1列
    gridBagConstraints_5.insets = new Insets(5, 0, 0, 0);
    gridBagConstraints_5.fill = GridBagConstraints.HORIZONTAL;
    getContentPane().add(button_5, gridBagConstraints_5);

    final JButton button_6 = new JButton("G");
    final GridBagConstraints gridBagConstraints_6 = new GridBagConstraints();
    gridBagConstraints_6.gridy = 2;
    gridBagConstraints_6.gridx = 1;
    gridBagConstraints_6.gridwidth = 2;// 组件占用两列
    gridBagConstraints_6.gridheight = 2;// 组件占用两行
    gridBagConstraints_6.insets = new Insets(5, 5, 0, 0);
    gridBagConstraints_6.fill = GridBagConstraints.BOTH;// 只调整组件的高度
//    gridBagConstraints_6.fill = GridBagConstraints.VERTICAL;// 只调整组件的高度
//    gridBagConstraints_6.ipadx = 30;// 增加组件的首选宽度
//    gridBagConstraints_6.anchor = GridBagConstraints.EAST;// 显示在东方
    getContentPane().add(button_6, gridBagConstraints_6);

    final JButton button_7 = new JButton("H");
    final GridBagConstraints gridBagConstraints_7 = new GridBagConstraints();
    gridBagConstraints_7.gridy = 3;
    gridBagConstraints_7.gridx = 0;
    gridBagConstraints_7.insets = new Insets(5, 0, 0, 0);
    gridBagConstraints_7.fill = GridBagConstraints.HORIZONTAL;
    getContentPane().add(button_7, gridBagConstraints_7);
    //
  }

}