java - Finally block will be executed in case of OutOfMemoryError? -


consider below code,

public class test {      public void abc() {         try {             throw new outofmemoryerror();         } {             system.out.println("finally");         }     }      public static void main(string[] args) {         new test().abc();     }  }

output :

exception in thread "main" java.lang.outofmemoryerror     @ test.abc(test.java:5)     @ test.main(test.java:12)

so, finally block getting executed in case, above output not fixed each time.

  1. so question is, here throwing outofmemoryerror , finally block getting executed. true every case ?

  2. if yes finally block executed when outofmemoryerror thrown in reality, means memory area expansion performed while execution , enough memory not available ?

things interesting if try in block requiring additional memory:

public class {      public void abc() {         try {             throw new outofmemoryerror();         } {             byte[] b = new byte[1024*1024*1024];             system.out.println("finally");         }     }      public static void main(string[] args) {         new finally().abc();     } }

now when execute code (java -xmx20m finally example), can end in situation available heap has been exhausted extent finally block cannot complete, execution cannot guaranteed. not recommend rely on blocks in case of outofmemoryerrors.


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