public class ExceptionTest3 {
    public ExceptionTest3(){
        try {
            test();
        } catch (TestException ex) {
            Throwable th = ex.getCause();
            th.printStackTrace();
        }
    }

    private void test() throws TestException {
        try {
            throw new InterruptedException();
        } catch (InterruptedException ex) {
            throw new TestException(ex);
        }
    }
    
    public static void main(String[] args){
        new ExceptionTest3();
    }
}