JToggleButton API中可能存在的错误？

Question

我从java2s得到了一个JToggleButton的例子。在代码中，如果文本是“West”，我看到切换按钮不能正确显示文本。 West显示为We ..其他一切都没问题。但是当text =“west”，即w很小时没有问题。这是一个错误？

代码：

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计算不正确

SystemLookAndFeel

雨云

物质

从代码（通过使用相同的BorderLayout的问题与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

似乎只是正常工作对我来说...

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); 
      } 

     }); 
    } 

}