What causes a java.lang.StackOverflowError

Question

What can cause a java.lang.StackOverflowError? The stack printout that I get is not very deep at all (only 5 methods).

Answer 1

Check for any recusive calls for methods. Mainly it is caused when there is recursive call for a method. A simple example is

public static void main(String... args) {     Main main = new Main();      main.testMethod(1); }  public void testMethod(int i) {     testMethod(i);      System.out.println(i); } 

Here the System.out.println(i); will be repeatedly pushed to stack when the testMethod is called.