Tuning GC parameters for a large Swing application

Question

Our Swing application suffers from periodic out-of-memory errors. We have been trying to tune the application with limited sucess.
The problem is full GC is called only when it is close to the maximum memory. As a result when it reaches the max-heap-size values, it takes a long time to complete GC and the application hangs.
My current jnlp settings are as follows:
<j2se version="1.5+" href="http://mydomain/myapp/jre" initial-heap-size="64M"
  max-heap-size="384M"
  java-vm-args="-verbose:gc -Dsun.java2d.noddraw=true -XX:NewSize=16m -XX:SurvivorRatio=8 -XX:YoungGenerationSizeIncrement=5 -XX:TenuredGenerationSizeIncrement=5 -XX:AdaptiveSizeDecrementScaleFactor=5" />I am looking at ways by which the tenured generation too gets garbage collected peiodically. Is there a way by which I can achieve this?

Answer 1

for first one, try paintImmediately(rectangle) method. for second one, i guess Graphics g = panel.getGraphics();
g.drawRect(....);