### Question:
SystemPropertyNotFoundRuntimeException extends SRuntimeException { public String getPropertyName() { return propertyName; } SystemPropertyNotFoundRuntimeException(String propertyName); String getPropertyName();  }### Answer:
@Test public void test() throws Exception { SystemPropertyNotFoundRuntimeException e = new SystemPropertyNotFoundRuntimeException( "aaa"); assertEquals("aaa", e.getPropertyName()); System.out.println(e.getMessage()); }