Error java.lang.OutOfMemoryError: GC overhead limit exceeded

The java.lang.OutOfMemoryError: GC overhead limit exceeded error occurs when the garbage collector is unable to free up enough memory to meet the memory allocation request of the application. This can happen when the application has a memory leak, or when it is trying to allocate a very large object that exceeds the available heap size.

To fix the OutOfMemoryError, you can try the following approaches:

  1. Increase the heap size: You can increase the heap size of the JVM by using the -Xmx command-line option. For example, to increase the heap size to 1 GB, you can use the following command:
java -Xmx1g MyClass

  1. Fix the memory leak: If the OutOfMemoryError is caused by a memory leak, you can try to find the root cause of the leak and fix it. You can use a tool like the Eclipse Memory Analyzer (MAT) to analyze the heap dump and identify the objects that are causing the leak.

  2. Use a lower-memory data structure: If you are trying to allocate a very large object that exceeds the available heap size, you can try to use a lower-memory data structure that uses less memory. For example, instead of using a HashMap, you can use a HashSet or a TreeSet.

I hope this helps! Let me know if you have any other questions.