How to deal with “java.lang.OutOfMemoryError: Java heap space” error?

Question

I am writing a client-side Swing application (graphical font designer) on Java 5. Recently, I am running into java.lang.OutOfMemoryEr

Answer 1

If this issue is happening in Wildfly 8 and JDK1.8,then we need to specify MaxMetaSpace settings instead of PermGen settings.

For example we need to add below configuration in setenv.sh file of wildfly. JAVA_OPTS="$JAVA_OPTS -XX:MaxMetaspaceSize=256M"

For more information, please check Wildfly Heap Issue