Develop a JUnit like test tool ,MyJUnit, that extends class TestHarness.

In TestHarness, there are two overloading methods boolean checkEqual(int actual, int expected) and boolean checkEqual(double actual, double expected) for comparing primitive data type values.

The MyJUnit can accept multiple testlet class names, such as java MyJUnit RectangleTestlet BoxTestlet, to test testlet classes in order. Most importantly, the MyJUnit tool must be able to handle new testlet classes in the future without a need of code change. All the testlet classes implement an interface called TestletIF which defines a runTest method. Feel free to specify the argument for the method.