eclipse无法打开，打开后弹出一个对话框，说是

Java was started but returned exit code=2
c:\windows\system32\javaw.exe
-jar
d:\Program
Files\eclipse-jee3.5\plugins\org.eclipse.equinox.launcher_1.1.0.v20100507.jar
-os win32
-ws win32
-arch x86
-showplash
.........