RE: memory leak... some one help, please!!

[Jeff Leuschner]

Title: memory leak... some one help, please!!

Can you give us more details? When running this program

as is, I do not see the growth that you do, especially since

it stops at 400. Maybe it's the version of Java or the platform

you are running?

 

Jeff

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Pepelis, Aaron
Sent: Friday, April 06, 2001 10:33 AM
To: [EMAIL PROTECTED]
Subject: memory leak... some one help, please!!

why is there a memory leak in this?
it just keeps grow and growing and growing...
someone help me please... this brought a over night test up to 166MB of memory usage...
thanks
aaron

import javax.swing.*; 
import java.awt.*;
import javax.swing.text.*;

public class BufferedOutputArea extends JTextArea
{

  private int size_of_buffer;
  private int cut_back = 0;
  String tempString;
  public BufferedOutputArea( int buffer)
  {
    this(buffer, 0);
  }
  public BufferedOutputArea( int buffer, int cut_back)
  {
    size_of_buffer = buffer;
    this.cut_back = cut_back;
  }
  public void setBufferSize(int buffer)
  {
    size_of_buffer = buffer;
  }
  public int getBufferSize()
  {
    return size_of_buffer;
  }
  public void append(String str)
  {
    tempString = getText()+str;
    super.append(str);
    if (tempString.length() > this.size_of_buffer)
    {
      try
      {                                                                    
         System.out.println("hit  "+str + "\n" + size_of_buffer + " " + cut_back + " " + tempString.length());
        // setText(getText(cut_back, tempString.length()));
         getDocument().remove(0,tempString.length() - this.size_of_buffer + cut_back);
         System.out.println(""+getText().length());

      }
      catch (BadLocationException e)
      {
      }
    }
    setCaretPosition(getText().length());
  }

  public static void main(String [] args)
  {
    JFrame frame = new JFrame();
    BufferedOutputArea output = new BufferedOutputArea(5000, 2000);
    JScrollPane scroll = new JScrollPane(output);
    scroll.setAutoscrolls(true);
    frame.getContentPane().add(scroll);
    frame.setSize(500,500);
    frame.setVisible(true);
    output.append("hello you think\nthat you are so cool\njust because your gnigg?\n");
    try
    {
      for (int i= 0; i < 400; i++)
      {
        output.append("fudge this out put " + i + "\n3444444444444444444444444444444444444999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999\n" );

        Thread.sleep(300);
      }
    }
    catch (Exception e)
    {

    }
  }
}