Resolve “java.lang.OutOfMemoryError: PermGen space” error in Maven

If your project have more than 10 modules and your building tool is maven you would face this exception that comes into your console.

 java.lang.OutOfMemoryError: PermGen space  
     at java.lang.ClassLoader.defineClass1(Native Method)  
     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)  
     at java.lang.ClassLoader.defineClass(ClassLoader.java:616)  

to avoid this just execute the following command in console.

 set MAVEN_OPTS=-XX:MaxPermSize=512m  

But sometime you have to provide the double quotes as well.

 set MAVEN_OPTS="-XX:MaxPermSize=512m"