Java.lang.OutOfMemoryError:Java Heap Space under eclipse

At the moment I'm not using Tomcat, only Java projects.

Settings are as follows:
1. Modification from intalled JREs;
Window->preferences->java->installed JREs, select the current JRE, then edit it; set the default VM arguments to-xms128m in a new window- Xmx512M can be;
This setting should be valid for all projects;

2. If you just want to be effective with a project, from debug ... or run ... In the (x) =arguments, the same parameters as above can be set;

3.window->preferences->application Servers->tomcat->tomcat 6.x, select JDK settings.
MyEclipse the following setup methods:
Window-->preference-->myeclipse-->applicationservers-->tomcat-->tomcat

4.x-->jdk-->optional Java VM Arguments
Fill in the following:-xms100m-xmx200m-xx:permsize=256m-xx:maxpermsize=600m

Java.lang.OutOfMemoryError:Java Heap Space under eclipse