反射机制(2)
package com.bjsxt.demo;import java.lang.reflect.Method;class Tools {public void print() {System.out.println("Tools类中无参无返回值的方法。");}public String getInfo() {//无参有返回值return "Hello MLDN.";}public int add(int x, int y) {return x+y;}}public class APIDemo {/** * @param args */public static void main(String[] args) throws Exception {Class<?> cls = Class.forName("com.bjsxt.demo.Tools");Method met[] = cls.getMethods();for(int x = 0; x < met.length; x++) {System.out.println(met[x]);}}}首先为了说明出Method方法的功能,先取得Tools类中的全部方法,当然,这些方法应该包含了继承而来的package com.bjsxt.demo;import java.lang.reflect.Method;import java.lang.reflect.Modifier;class Tools {public void print() {System.out.println("Tools类中无参无返回值的方法。");}public String getInfo() {//无参有返回值return "Hello MLDN.";}public int add(int x, int y) {return x+y;}}public class APIDemo {/** * @param args */public static void main(String[] args) throws Exception {Class<?> cls = Class.forName("com.bjsxt.demo.Tools");Method met[] = cls.getMethods();for(int x = 0; x < met.length; x++) {System.out.print(Modifier.toString(met[x].getModifiers()) + " ");Class<?> returnType = met[x].getReturnType();System.out.print(returnType.getName() + " ");System.out.print(met[x].getName());System.out.print("(");Class<?>[] param = met[x].getParameterTypes();for(int i = 0; i < param.length; i++) {System.out.print(param[i].getName() + " arg-" + i);if(i != param.length - 1) {System.out.print(",");}}System.out.print(")");Class<?> exp[] = met[x].getExceptionTypes();if(exp.length > 0) {System.out.print(" throws ");for(int y = 0; y < exp.length; y++) {System.out.print(exp[y].getName());if(y != exp.length - 1) {System.out.print(",");}}}System.out.println();}}}首先为了说明出Method方法的功能,先取得Tools类中的全部方法