version.java

来自「java 完全探索的随书源码」· Java 代码 · 共 26 行

// Version.java

import javax.swing.*;

class Version
{
   public static void main (String [] args)
   {
      JLabel l = new JLabel ();

      Package p = Package.getPackage ("javax.swing");
      if (p != null)
      {
          System.out.print ("Swing Version: ");
          System.out.println (p.getSpecificationVersion ());
      }

      p = Package.getPackage ("java.awt");
      if (p != null)
      {
          System.out.print ("AWT Version: ");
          System.out.println (p.getSpecificationVersion ());
      }
   }
}