Java反射机制练习

public static void main(String[] args) throws ClassNotFoundException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, InstantiationException {
//需求:执行类中所有以test开头的方法

	Scanner in = new Scanner(System.in);
	String className = in.nextLine();
	//动态加载类
	Class<?> clas = Class.forName(className);
	Method[] methods = clas.getMethods();//继承 公共方法
	Method[] declaredMethods = clas.getDeclaredMethods();//非继承 所有方法
	
	//创建一个不可重复集合set
	Set<Method> set = new HashSet<Method>();
	for (Method method : methods) {
		set.add(method);
	}
	for (Method method : declaredMethods) {
		set.add(method);
	}
	
	//创建一个list集合存储以该类中所有以test开头的方法
	List<Method> list = new ArrayList<Method>();
	for (Method method : set) {
		//System.out.println(method);	//打桩
		if (method.getName().startsWith("test")) {
			list.add(method);
		}
	}
	
	for (Method method : list) {
		//System.out.println(method);
		//invoke是方法执行完毕返回的对象
		Object invoke = method.invoke(clas.newInstance(), null);
		System.out.println("执行完毕");
	}
	
}
原文地址:https://www.cnblogs.com/chentging/p/7111425.html