如何在Java中使用Swing創建用戶界面？

Question

我想用Java創建一個用戶界面（下圖）。我已經使用了網格佈局，但我如何平分？

Answer 1

這裏是你的代碼

public class SwingSolution extends JFrame 
{ 
    private JPanel componentPanel = null; 
    private JButton buttonWithWidth2 = null;  
    private JButton button2 = null; 
    private JButton buttonWithHeight2 = null; 
    private JButton button4 = null; 
    private JButton button5 = null; 

    public JPanel getComponentPanel() 
    { 
     if(null == componentPanel) 
     { 
      componentPanel = new JPanel(); 
      GridBagLayout gridBagLayout = new GridBagLayout(); 
      componentPanel.setLayout(gridBagLayout); 

      GridBagConstraints constraint = new GridBagConstraints(); 

      constraint.gridx = 0; 
      constraint.gridy = 0; 
      // Set gridwidth to 2 grids 
      constraint.gridwidth = 2; 
      buttonWithWidth2 = new JButton("Button Width 2"); 
      componentPanel.add(buttonWithWidth2, constraint); 

      constraint.gridx = 2; 
      constraint.gridy = 0; 
      // set the gridwidth back to normal i.e. 1 grid 
      constraint.gridwidth = 1; 
      button2 = new JButton("Button 2"); 
      componentPanel.add(button2, constraint); 

      constraint.gridx = 0; 
      constraint.gridy = 1; 
      // set the gridheight to 2 
      constraint.gridheight = 2; 
      buttonWithHeight2 = new JButton("Button Height 2"); 
      componentPanel.add(buttonWithHeight2, constraint); 

      constraint.gridx = 1; 
      constraint.gridy = 1; 
      // set the gridheight back to normal i.e. 1 grid 
      constraint.gridheight = 1; 
      button4 = new JButton("Button 4"); 
      componentPanel.add(button4, constraint); 

      constraint.gridx = 1; 
      constraint.gridy = 2; 
      button5 = new JButton("Button 5"); 
      componentPanel.add(button5, constraint); 
     } 

     return componentPanel; 
    } 

    public static void main(String[] args) 
    { 
     JFrame frame = new JFrame(); 
     SwingSolution main = new SwingSolution(); 

     frame.setTitle("Simple example"); 
     frame.setSize(300, 200); 
     frame.setLocationRelativeTo(null); 

     frame.setContentPane(main.getComponentPanel()); 

     frame.setVisible(true); 
     frame.setDefaultCloseOperation(EXIT_ON_CLOSE); 
    } 
} 

它應該給你輸出：