Java如何使用GridLayout布置swing组件？
本示例使用GridLayout来创建四乘四网格布局。我们在每个网格中放置一个JTextField组件来读取用户输入。
package org.nhooo.example.swing;
import javax.swing.*;
import java.awt.*;
public class GridLayoutDemo extends JFrame {
public GridLayoutDemo() {
initializeUI();
}
private void initializeUI() {
setSize(300,300);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
//创建水平和垂直5像素的四乘四GridLayout
//每行或每列之间的间隙。
GridLayout grid = new GridLayout(4, 4, 5, 5);
//grid.setColumns(4);
//grid.setRows(4);
//grid.setHgap(5);
//grid.setVgap(5);
setLayout(grid);
JTextField[][] textFields = new JTextField[4][4];
for (int i = 0; i < textFields.length; i++) {
for (int j = 0; j < textFields[i].length; j++) {
textFields[i][j] = new JTextField(String.valueOf((i + 1) * (j + 1)));
//将文本放在JTextField组件的中心
textFields[i][j].setHorizontalAlignment(SwingConstants.CENTER);
getContentPane().add(textFields[i][j]);
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new GridLayoutDemo().setVisible(true);
}
});
}
}