java通過反射調用不同參數的方法

import java.lang.reflect.Method;public class testReflect {/** * @param args */public static void main(String[] args) {try {Wu w=new Wu();Object[] argspara=new Object[]{};testReflect.invokeMethod(w, "outInfo",argspara);argspara=new Object[]{"wu"};testReflect.invokeMethod(w, "outInfo",argspara);argspara=new Object[]{"wu",2};testReflect.invokeMethod(w, "outInfo",argspara);} catch (Exception e) {e.printStackTrace();}}/** * 反射調用方法 * @param newObj 執行個體化的一個對象 * @param methodName 對象的方法名 * @param args 參數數組 * @return 傳回值 * @throws Exception */public static Object invokeMethod(Object newObj, String methodName, Object[] args)throws Exception {Class ownerClass = newObj.getClass();Class[] argsClass = new Class[args.length];for (int i = 0, j = args.length; i < j; i++) {   argsClass[i] = args[i].getClass();}Method method = ownerClass.getMethod(methodName, argsClass);return method.invoke(newObj, args);}}class Wu{     public void outInfo() {         System.out.println("Wu.outInfo");     }     public void outInfo(String s) {         System.out.println("Wu.outInfo(String s):"+s);     }     public void outInfo(String s,Integer n) {         System.out.println("Wu.outInfo(String s,int n):"+s+n);     } }