	@Test
	public void testTwoJar() throws Exception {


		updateJar("a");
		updateJar("b");

		msg("change to urlcl");
		Thread.sleep(200);
		ClassLoader cur = loader.getClassLoader();
		assertTr(cur != parent);
		assertTr(cur instanceof JarClassLoader);

		// loader.close();
		msg("no change");
		Thread.sleep(200);
		assertTr(cur == loader.getClassLoader());

		msg("change to another urlcl");
		updateJar("a");
		Thread.sleep(200);
		assertTr(cur != loader.getClassLoader());

		msg("change to another urlcl");
		updateJar("b");
		Thread.sleep(200);
		assertTr(cur != loader.getClassLoader());
	}