GUI中的Java选项卡

Question

我希望有人能给我提供这个解决方案。它是我班的主要实验室的一部分，它真的不给我太多，因为我只是不明白如何制作带有选项卡的GUI。我可以使用某种图形用户界面来创建一个常规程序，但是我一直在搜索和阅读，因为整个类部件和声明了私有变量，所以不能放置2和2。所以我问的是，如果有人能让我成为一个带有5个选项卡的主GUI，并将我的代码放到1个选项卡中，那么我可以学习并将其余的代码放入其他4个选项卡中。所以我希望你不要以为我希望你在我有代码时给我代码，我只是没有真正得到这些标签，而且我们在课堂上还没有完成。这里有自己的gui的代码，我希望我输入的内容很有意义。我通过观察来学习代码，这将帮助我一堆。

package landscape; 
import javax.swing.*; 
import java.awt.Component; 
import java.awt.Container; 
import java.awt.FlowLayout; 
import java.awt.event.*; 
import java.text.DecimalFormat; 

public class Landscape extends JFrame { 

    private JFrame mainFrame; 
    private JButton calculateButton; 
    private JButton exitButton; 
    private JTextField lengthField; 
    private JLabel lengthLabel; 
    private JTextField widthField; 
    private JLabel widthLabel; 
    private JTextField depthField; 
    private JLabel depthLabel; 
    private JTextField volumeField; 
    private JLabel volumeLabel; 
    private JRadioButton builtIn; 
    private JRadioButton above; 
    private JTabbedPane panel; 

    public Landscape() 
    { 

     JTabbedPane tabs=new JTabbedPane(); 
     tabs.addTab("Pool", panel);//add a tab for the panel with the title "title" 
     //you can add more tabs in the same fashion - obviously you can change the title 
     //tabs.addTab("another tab", comp);//where comp is a Component that will occupy the tab 
     mainFrame.setContentPane(tabs);//the JFrame will now display the tabbed pane 
     mainFrame.setSize(265,200); 
     mainFrame.setLocationRelativeTo(null); 
     mainFrame.setVisible(true); 
     mainFrame.setResizable(false); 
     JPanel panel = new JPanel();//FlowLayout is default 

     //Pool 
      panel.setOpaque(false);//this tells the panel not to draw its background; looks nicer under LAFs where the background inside a tab is different from that of JPanel 
     panel.add(builtIn); 
     panel.add(above); 
     panel.add(lengthLabel); 
     panel.add(lengthField); 
     panel.add(widthLabel); 
     panel.add(widthField); 
     panel.add(depthLabel); 
     panel.add(depthField); 
     panel.add(volumeLabel); 
     panel.add(volumeField); 
     panel.add(calculateButton); 
     panel.add(exitButton);  
     //creating components 
     calculateButton = new JButton ("Calculate"); 
     exitButton = new JButton ("Exit"); 
     lengthField = new JTextField (5); 
     lengthLabel = new JLabel ("Enter the length of your pool: "); 
     widthField = new JTextField (5); 
     widthLabel = new JLabel ("Enter the width of your pool: "); 
     depthField = new JTextField (5); 
     depthLabel = new JLabel ("Enter the depth of your pool: "); 
     volumeField = new JTextField (5); 
     volumeLabel = new JLabel ("Volume of the pool: "); 
     //radio button 
     ButtonGroup buttonGroup = new ButtonGroup(); 
     builtIn = new JRadioButton ("Built in"); 
     buttonGroup.add(builtIn); 
     above = new JRadioButton ("Above"); 
     buttonGroup.add(above); 

     exitButton.setMnemonic('x'); 
     calculateButton.setMnemonic('C'); 


     mainFrame.addWindowListener(new WindowAdapter() { 
      public void windowClosing(WindowEvent e) 
      { System.exit(0); } 
     }); 

     // create the handlers 
     calculateButtonHandler chandler = new calculateButtonHandler(); //instantiate new object 
     calculateButton.addActionListener(chandler); // add event listener 

     ExitButtonHandler ehandler = new ExitButtonHandler(); 
     exitButton.addActionListener(ehandler); 

     FocusHandler fhandler = new FocusHandler(); 
     lengthField.addFocusListener(fhandler); 
     widthField.addFocusListener(fhandler); 
     depthField.addFocusListener(fhandler); 

    } 

    class calculateButtonHandler implements ActionListener 
    { 
     public void actionPerformed(ActionEvent e) 
     { 
      DecimalFormat num = new DecimalFormat(", ###.##"); 
      double width; 
      double length; 
      double depth; 
      double volume; 
      double volume2; 
      double height; 
      String instring; 

      instring = lengthField.getText(); 
      if (instring.equals("")) 
      { 
       instring = "0"; 
       lengthField.setText("0"); 
      } 
      length = Double.parseDouble(instring); 

      instring = widthField.getText(); 
      if (instring.equals("")) 
      { 
       instring = "0"; 
       widthField.setText("0"); 
      } 
      width = Double.parseDouble(instring); 

      instring = depthField.getText(); 
      if (instring.equals("")) 
      { 
       instring = "0"; 
       depthField.setText("0"); 
      } 
      depth = Double.parseDouble(instring); 

      volume = width * length * depth; 
      volumeField.setText(num.format(volume)); 

      volume2 = width * length * depth; 
      } 

     } 

    class ExitButtonHandler implements ActionListener 
    { 
     public void actionPerformed(ActionEvent e) 
     { 
      System.exit(0); 
     } 
    } 

    class FocusHandler implements FocusListener 
    { 
     public void focusGained(FocusEvent e) 
     { 
      if(e.getSource() == lengthField || e.getSource() == widthField || e.getSource() == depthField) 
      { 
       volumeField.setText(""); 
      } 
      else if (e.getSource() == volumeField) 
      { 
       volumeField.setNextFocusableComponent(calculateButton); 
       calculateButton.grabFocus(); 
      } 
     } 

     public void focusLost1(FocusEvent e) 
     { 
      if(e.getSource() == widthField) 
      { 
       widthField.setNextFocusableComponent(calculateButton); 
      } 
     } 

     public void focusLost(FocusEvent e) 
     { 
      if(e.getSource() == depthField) 
      { 
       depthField.setNextFocusableComponent(calculateButton); 
      } 
     } 
    } 

    public static void main(String args[]) 
    { 
     Landscape app = new Landscape(); 
    } 
} 

Answer 1

除了获取内容窗格并添加它，只需创建一个新的JPanel并添加您的东西。然后，将面板添加到新的JTabbedPane中，并使用所需的任何标题，并将JFrame的内容窗格设置为选项卡式窗格。

这里，你会怎么做一个简单的例子：

JPanel panel=new JPanel();//FlowLayout is default 
panel.setOpaque(false);//this tells the panel not to draw its background; looks nicer under LAFs where the background inside a tab is different from that of JPanel 
panel.add(builtIn); 
panel.add(above); 
//...you get the picture; add all the stuff you already do, just use panel instead of c 
JTabbedPane tabs=new JTabbedPane(); 
tabs.addTab("title", panel);//add a tab for the panel with the title "title" 
//you can add more tabs in the same fashion - obviously you can change the title 
tabs.addTab("another tab", comp);//where comp is a Component that will occupy the tab 
mainFrame.setContentPane(tabs);//the JFrame will now display the tabbed pane 

您可以留下您的代码的其余部分是怎么回事，它应该工作的罚款。

Answer 2

的tutorial及其demo是非常直接的例子。