### Question:
Handler { static int getExceptionTableLength(final Handler firstHandler) { int length = 0; Handler handler = firstHandler; while (handler != null) { length++; handler = handler.nextHandler; } return length; } Handler(
      final Label startPc,
      final Label endPc,
      final Label handlerPc,
      final int catchType,
      final String catchTypeDescriptor);   Handler(final Handler handler, final Label startPc, final Label endPc);   }### Answer:
@Test public void testGetExceptionTableLength() { Handler handler = newHandler(10, 20); assertEquals(0, Handler.getExceptionTableLength(null)); assertEquals(1, Handler.getExceptionTableLength(handler)); }