GroupLayout用法

最新推荐文章于 2024-05-31 20:30:10 发布

iteye_18591

最新推荐文章于 2024-05-31 20:30:10 发布

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本文介绍了如何使用 GroupLayout 在 Java Swing 应用中实现布局管理，通过创建 JFrame、JPanel 和按钮组件，演示了顺序布局（Sequential）和并行布局（Parallel）的应用，并展示了如何将这些布局组合在一起。

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import javax.swing.GroupLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class UseGroupLayout{ public static void main(String[] args){ JFrame frame = new JFrame(); JPanel panel = new JPanel(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); GroupLayout layout = new GroupLayout(panel); panel.setLayout(layout); JButton buttonD = new JButton("D"); JButton buttonR = new JButton("R"); JButton buttonY = new JButton("Y"); JButton buttonO = new JButton("O"); JButton buttonT = new JButton("T"); //sequential:连续的/有序的 GroupLayout.SequentialGroup leftToRight = layout.createSequentialGroup(); leftToRight.addComponent(buttonD); //Parallel:平行线 GroupLayout.ParallelGroup columnMiddle = layout.createParallelGroup(); columnMiddle.addComponent(buttonR); columnMiddle.addComponent(buttonO); columnMiddle.addComponent(buttonT); leftToRight.addGroup(columnMiddle); leftToRight.addComponent(buttonY); GroupLayout.SequentialGroup topToBottom = layout.createSequentialGroup(); GroupLayout.ParallelGroup rowTop = layout.createParallelGroup(); rowTop.addComponent(buttonD); rowTop.addComponent(buttonR); rowTop.addComponent(buttonY); topToBottom.addGroup(rowTop); topToBottom.addComponent(buttonO); topToBottom.addComponent(buttonT); layout.setHorizontalGroup(leftToRight); layout.setVerticalGroup(topToBottom); frame.add(panel); frame.pack(); frame.setVisible(true); } }