如何在已经扩展JPanel的类中嵌套面板？

Question

我的代码是

public class IncomeStatementPanel extends JPanel 
{ 
    private JLabel costOfGoodSoldIncState = new JLabel("Cost of goods sold", SwingConstants.RIGHT); 
    private JLabel ebitIncState = new JLabel("EBIT", SwingConstants.RIGHT); 
    private JLabel deprecIncState = new JLabel("Depreciation", SwingConstants.RIGHT); 
    ...  

//I want to add more panels to this, but don't know the code to create them. 

    public IncomeStatementPanel() 
    { 
     //Set grid layout for the panel 
     setLayout(new GridLayout(14,2,0,0)); 



    } 

} 

Answer 1

你可以只添加它们就像你通常会。

public class IncomeStatementPanel extends JPanel 
{ 
    private JLabel costOfGoodSoldIncState = new JLabel("Cost of goods sold", SwingConstants.RIGHT); 
    private JLabel ebitIncState = new JLabel("EBIT", SwingConstants.RIGHT); 
    private JLabel deprecIncState = new JLabel("Depreciation", SwingConstants.RIGHT); 
    private JPanel myPanel = new JPanel(); // Nothing special here 
    ...  

    public IncomeStatementPanel() 
    { 
     //Set grid layout for the panel 
     setLayout(new GridLayout(14,2,0,0)); 
     this.add(myPanel); // Or here. The "this." part is optional by the way. 
    } 

}