java反射----根据方法名，类和对象执行对象的该方法

public class Test {
	public void run(String a){
		System.out.println(a+"反射的测试方法");
	}
}

public static void main(String[] args) {
		String methodName="run";
		Class formatter=Test.class;
		Test t1=new Test();
		Method cMethod;
		try {
			cMethod = formatter.getMethod(methodName, new Class[]{String.class});
			String aa=(String) cMethod.invoke(t1, new Object[]{"罗成"});
		}
		catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
			e.printStackTrace();
		}  
		catch (NoSuchMethodException e) {
			e.printStackTrace();
		} 
		catch (SecurityException e) {
			e.printStackTrace();
		}
	}