The error doesn't mean that your system is out of memory. The JVM allocates a glob of memory at startup to allocate objects from, and is configured with a maxim

The error doesn't mean that your system is out of memory. The JVM allocates a glob of memory at startup to allocate objects from, and is configured with a maximum heap size. If you run out of heap space on the JVM, you can relaunch the java process with a higher max heap size using the -Xmx option.