JToggleButton API中可能存在的錯誤？

Question

我從java2s得到了一個JToggleButton的例子。在代碼中，如果文本是「West」，我看到切換按鈕不能正確顯示文本。 West顯示爲We ..其他一切都沒問題。但是當text =「west」，即w很小時沒有問題。這是一個錯誤？

代碼：

import java.awt.BorderLayout; 

import javax.swing.JFrame; 
import javax.swing.JToggleButton; 

public class MainClass { 
public static void main(String args[]) { 
JFrame f = new JFrame("JToggleButton Sample"); 
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
f.add(new JToggleButton("North"), BorderLayout.NORTH); 
f.add(new JToggleButton("East"), BorderLayout.EAST); 
f.add(new JToggleButton("West"), BorderLayout.WEST); 
f.add(new JToggleButton("Center"), BorderLayout.CENTER); 
f.add(new JToggleButton("South"), BorderLayout.SOUTH); 
f.setSize(300, 200); 
f.setVisible(true); 
} 
} 

Answer 1

MetalLookAndFeel - 的getPreferredSize計算不正確

SystemLookAndFeel

雨雲

物質

從代碼（通過使用相同的BorderLayout的問題與JFrame的，如的JPanel容器）

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JToggleButton; 
import javax.swing.SwingUtilities; 
import javax.swing.UIManager; 

public class MainClass { 

    public static void main(String args[]) { 
     EventQueue.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       try { 
        UIManager.setLookAndFeel(
          "org.pushingpixels.substance.api.skin.SubstanceOfficeBlue2007LookAndFeel"); 
        //UIManager.getDefaults(); 
       } catch (Exception e) { 
       } 
      } 
     }); 

     /*try { 
      //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
      for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) { 
       if ("Nimbus".equals(laf.getName())) { 
        UIManager.setLookAndFeel(laf.getClassName()); 
       } 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     }*/ 

     SwingUtilities.invokeLater(new Runnable() { 
      @Override 
      public void run() { 
       JFrame f = new JFrame("JToggleButton Sample"); 
       f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       JPanel panel = new JPanel(); 
       panel.setLayout(new BorderLayout()); 
       panel.add(new JToggleButton("North"), BorderLayout.NORTH); 
       panel.add(new JToggleButton("East"), BorderLayout.EAST); 
       panel.add(new JToggleButton("West"), BorderLayout.WEST); 
       panel.add(new JToggleButton("Center"), BorderLayout.CENTER); 
       panel.add(new JToggleButton("South"), BorderLayout.SOUTH); 
       f.add(panel); 
       f.pack(); 
       //f.setSize(300, 200); 
       f.setVisible(true); 
      } 
     }); 
    } 
} 

Answer 2

似乎只是正常工作對我來說...

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import javax.swing.JFrame; 
import javax.swing.JToggleButton; 
import javax.swing.UIManager; 
import javax.swing.UnsupportedLookAndFeelException; 

public class TestLayout23 { 

    public static void main(String[] args) { 
     new TestLayout23(); 
    } 

    public TestLayout23() { 
     EventQueue.invokeLater(new Runnable() { 
      @Override 
      public void run() { 
       try { 
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
       } catch (ClassNotFoundException ex) { 
       } catch (InstantiationException ex) { 
       } catch (IllegalAccessException ex) { 
       } catch (UnsupportedLookAndFeelException ex) { 
       } 

       JFrame f = new JFrame("JToggleButton Sample"); 
       f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       f.add(new JToggleButton("North"), BorderLayout.NORTH); 
       f.add(new JToggleButton("East"), BorderLayout.EAST); 
       f.add(new JToggleButton("West"), BorderLayout.WEST); 
       f.add(new JToggleButton("Center"), BorderLayout.CENTER); 
       f.add(new JToggleButton("South"), BorderLayout.SOUTH); 
       f.pack(); 
       f.setLocationRelativeTo(null); 
       f.setVisible(true); 
      } 

     }); 
    } 

}