FIX: Java.awt.PrintJob Leaks GDI Objects (277781)

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a file named PrintTestRepro.java, and paste the following code:

   import java.awt.*;
   import java.awt.event.*;
   
   public class PrintTestRepro extends Frame {
   
      public PrintTestRepro () {
         Button myButton = new Button("Print");
         Drawing myDrawing = new Drawing();
   
         setLayout(new BorderLayout(5, 5));
         setSize(300, 300);
   
         add(myButton, BorderLayout.SOUTH);
   
         myDrawing.setLayout(new GridLayout(3,3,40,40));
         add(myDrawing, BorderLayout.CENTER);
   
         for (int i = 0; i < 9; i++) {
            myDrawing.add(new Drawing());
         }
   
         myButton.addActionListener(new ActionListener() {
            public void actionPerformed (ActionEvent evt) {
               try {
                  PrintJob job = 
                     Toolkit.getDefaultToolkit().getPrintJob(null, "", null);
                  print(job.getGraphics());
                  job.end();
                  System.gc();
               }
               catch (Throwable e) {
                  System.out.println(e);
               }
            }
         });
   
         addWindowListener(new WindowAdapter() {
            public void windowClosing (WindowEvent evt) {
               System.exit(0);
            }
         });
   
         setVisible(true);
      }
   
      public static void main (String[] args) {
         new PrintTestRepro();
      }
   
      class Drawing extends Container {
   
         public void paint (Graphics g) {
            Dimension sz = getSize();
   
            for (int x = 0; x < sz.width; x++) {
               int s = (int) (x * 255.0 / sz.width);
               g.setColor(new Color(s, s, s));
               g.drawLine(x, 0, x, sz.height);
            }
   
            super.paint(g);
         }
   
         public Dimension getPreferredSize () {
            return new Dimension(100, 100);
         }
      }
   }
   					

2. At a command prompt, type the following line to compile the sample:

   jvc PrintTestRepro

3. At a command prompt, type the following line to run the sample:

   jview PrintTestRepro

4. At the bottom of the application, click the Print button, and print to a file or printer.
   
   Observe the GDI resources:
   • On Windows 95 or 98, GDI resource percentages drop indefinitely as seen with the Resource Meter.
   • On Windows NT, GDI handles rise indefinitely as seen with the Task Manager.