Java: Call Method via Reflection

gistfile1.java

@Test
public void testRef() throws IllegalArgumentException, IllegalAccessException, InvocationTargetException,
		SecurityException, NoSuchMethodException {
	RefTest instance = new RefTest();
	Class params[] = {};
	Method thisMethod = RefTest.class.getDeclaredMethod("getA", params);
	String s = thisMethod.invoke(instance, new Object[0]).toString();

	Assert.assertEquals("b", s);
}

public class RefTest {
	public String getA() {
		return "a";
	}

	public String getB() {
		return "b";
	}
}