When EXTJS4 is added to the Web project in Eclipse, an internal error occurred during: "Building Workspace" appears.
Java Heap space error.
Solution 1: The EXTJS4 Project installation package do not put in the Web project is OK or recommended directly with MyEclipse directly imported EXJTS4 package, there is no problem.
Workaround 2: Import the ExtJS package so that it will get stuck with eclipse. Go to the project root, locate the. Project, open it in Notepad, and delete the two places:
First place:
<buildCommand>
<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>
<arguments>
</arguments>
</buildCommand>
Second place:
<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
Save the exit and refresh the project. and copy the Ext package into the project.
Reprinted from: http://blog.csdn.net/kkdelta/article/details/9006653
Eclipse News: An internal error occurred during: "Building Workspace". Java Heap Space