方法反射

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package reflectionExercise;import java.lang.reflect.Method;public class getMethod {    public static void main(String[] args) {        A a1=new A();        Class c=a1.getClass();        Method m;        try {            m = c.getMethod("print", new Class[]{int.class,int.class});            //or write in this form:             //Method m=c.getMethod("print", int.class,int.class);            //第一个参数写方法名，之后写参数列表            m.invoke(a1, 10,20);            //or write in this form:            //m.invoke(a1, new Object[]{10,20});            //和a1.print(10,20)的效果是一样的                   } catch (Exception e) {            e.printStackTrace();        }    }}class A{    public void print(int a,int b){        System.out.println(a+b);    }    public void print(String a,String b){        System.out.println(a.toLowerCase()+b.toUpperCase());    }    public void print(){        System.out.println("empty");    }}

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