How to catch an OutOfMemoryError in Java, an approach. This code is based on Log4J but should work with any other logger as well. Every try/catch should contain a logger handler.

CatchOutOfMemoryError.java

import org.apache.log4j.*;
import org.apache.log4j.spi.LoggingEvent;

private static String MEMORY_STRING = "OUT OF MEMORY ERROR MONITORED, EXITING";

static {
      Logger.getRootLogger().addAppender(new AsyncAppender() {
         public void append(LoggingEvent event) {
            if(event.getThrowableInformation() != null) {
               if(event.getThrowableInformation().getThrowable() instanceof OutOfMemoryError) {
                  exitingDueMemory();
               }
            }
         }
      });
      Thread.setDefaultUncaughtExceptionHandler((t, e) -> {
         if (e instanceof OutOfMemoryError) {
            exitingDueMemory();
         } else {
            final RuntimeException exception = new RuntimeException("warning, uncaught exception occurred", e);
            logger.error(exception, exception);
         }
      });
}
private static void exitingDueMemory() {
   System.err.println(MEMORY_STRING);
   logger.fatal(MEMORY_STRING);
   System.exit(42);
}