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  1. JDK
  2. JDK-1228661

Applet.preferredSize() returns different values when run as an application

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Details

    • x86
    • windows_nt

    Description

      All platforms: Applet.preferredSize() returns a different value when the applet is run
      in appletviewer then run as an application

      Steps to reproduce
      Compile and run the following code
      Save HTML to ResizeTest.html
      Run appletviewer ResizeTest.html
      // compare the dimension values printed to stdout

      // ----- ResizeTest.java -----

      import java.applet.Applet;
      import java.awt.*;

      public class ResizeTest extends Applet
      {
          public void init()
          {
             String resizeType;

             for (int i = 0; i < 10; i++)
             {
                add(new Button("Button"+i));
             }

             Dimension d = preferredSize();

             System.out.println(d);
          
             resize(d.width, d.height); // #1
         
          }

          public static void main(String a[])
          {
             AppletFrame.startApplet("ResizeTest", "Resize test");
          }

      }


      /* Generic Applet to Application Frame
       * @(#)AppletFrame.java 1.3 16 Nov 1995 17:26:57
       * @author Kevin A. Smith
       * The class AppletFrame provides a simple AWT Frame window for running
       * applications.
       *
       */

      import java.awt.Frame;
      import java.awt.Event;
      import java.awt.Dimension;
      import java.applet.Applet;

      // Applet to Application Frame window
      class AppletFrame extends Frame
      {

          public static void startApplet(String className, String title)
          {
             // local variables
             Applet a;
             Dimension appletSize;

             try
             {
                // create an instance of your applet class
                a = (Applet) Class.forName(className).newInstance();
             }
             catch (ClassNotFoundException e) { return; }
             catch (InstantiationException e) { return; }
             catch (IllegalAccessException e) { return; }

             // initialize the applet
             a.init();
             a.start();
        
             // create new application frame window
             AppletFrame f = new AppletFrame(title);
        
             // add applet to frame window
             f.add("Center", a);
        
             // resize frame window to fit applet
             // assumes that the applet sets its own size
             // otherwise, you should set a specific size here.
             appletSize = a.size();
             f.pack();
             f.resize(appletSize);

             // show the window
             f.show();
        
          } // end startApplet()
        
        
          // constructor needed to pass window title to class Frame
          public AppletFrame(String name)
          {
             // call java.awt.Frame(String) constructor
             super(name);
          }

          // needed to allow window close
          public boolean handleEvent(Event e)
          {
             // Window Destroy event
             if (e.id == Event.WINDOW_DESTROY)
             {
                // exit the program
                System.exit(0);
                return true;
             }
             
             // it's good form to let the super class look at any
             // unhandled events
             return super.handleEvent(e);

          } // end handleEvent()

      } // end class AppletFrame

      // ----- ResizeTest.html -----
      <HTML>
      <HEAD>
      <TITLE> resize bug </TITLE>
      </HEAD>
      <BODY>

      <BR>
      <APPLET CODE="ResizeTest.class" WIDTH=150 HEIGHT=25>
      <Param name = "resize" value = "int">
      </APPLET>

      </BODY>
      </HTML>




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            amfowler Anne Fowler (Inactive)
            kasmithsunw Kevin Smith (Inactive)
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              Updated:
              Resolved:
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