GridBagLayout與JPanels

Question

我已經搜索了幾個小時，但仍無法找到我需要的答案。

所以我試圖設置一個簡單的佈局，我想要的是一個GridBagLayout 它包含兩個JPanel。構建版面應該看起來像下面的圖片 。

Answer 1

心中已經使用的BoxLayout得到它。

import java.awt.Color; 


public class ProportionalPanels extends JFrame { 

private JPanel contentPane; 

/** 
* Create the frame. 
*/ 
public ProportionalPanels() { 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setBounds(100, 100, 450, 300); 
    contentPane = new JPanel(); 
    contentPane.setBorder(new EmptyBorder(0, 0, 0, 0)); 
    setContentPane(contentPane); 
    contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.X_AXIS)); 

    final JPanel panel_A = new JPanel(); 
    panel_A.setBackground(new Color(255, 165, 0)); 
    contentPane.add(panel_A); 

    final JPanel panel_B = new JPanel(); 
    panel_B.setBackground(new Color(176, 196, 222)); 
    contentPane.add(panel_B); 

    panel_A.setMinimumSize(new Dimension(0, 0)); 
    panel_B.setMinimumSize(new Dimension(0, 0)); 

    panel_A.setPreferredSize(new Dimension(0, 0)); 
    panel_B.setPreferredSize(new Dimension(0, 0)); 

    panel_A.setMaximumSize(new Dimension(Short.MAX_VALUE/5, Short.MAX_VALUE)); 
    panel_B.setMaximumSize(new Dimension(Short.MAX_VALUE, Short.MAX_VALUE)); 

    addComponentListener(new ComponentAdapter() { 
     @Override 
     public void componentResized(ComponentEvent e) { 
      System.out.printf("Panel width rate: %.2f %n", 
        panel_B.getSize().width/(double) panel_A.getSize().width); 
     } 
    }); 
} 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    ProportionalPanels frame = new ProportionalPanels(); 
    frame.setVisible(true); 
} 

}