Layout (GridLayout使用例子)

import java.awt.GridLayout;

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

/**
* GridLayout使用例子
*
* @author brj
*
*/
public class TestGridLayout extends JFrame {
TestGridLayout() {
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  // 关闭选项

  GridLayout layout = new GridLayout(2, 2, 10, 10);
  // 指定2行，2列；水平和垂直间隙均为10

  setLayout(layout);
  JButton btn = new JButton("btn1");
  getContentPane().add(btn);

  btn = new JButton("btn2");
  getContentPane().add(btn);

  btn = new JButton("btn3");
  getContentPane().add(btn);

  btn = new JButton("btn4");
  getContentPane().add(btn);

  pack();
}

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

}

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