复制代码
package com.beidou.test;
import java.lang.reflect.Method;
public class Dynamic {
public static void main(String[] args) throws Exception{
Class c = Dynamic.class;//得到对象
Method[] methods = c.getDeclaredMethods();//得到方法
for(Method method : methods){
System.out.print(method.getName());//打印参数名
Class[] parameterTypes = method.getParameterTypes();
for(int i=0;i<parameterTypes.length;i++){
String nameString=parameterTypes[i].getName();
System.out.print("parameterType:"+nameString);//打印方法参数类型
}
System.out.print("ReturnType:"+method.getReturnType());
System.out.println();
}
Object obj=c.newInstance();//获取到方法对象,假设方法的参数是一个int,String,method名为getAge
Method sAge = c.getMethod("getAge", new Class[] {int.class,String.class});
//获得参数Object
Object[] arguments = new Object[]{new Integer(23),new String("abc")};
//执行方法
String s=(String)sAge.invoke(obj , arguments);
System.out.print(s);
}
public String getAge(int age,String name){
return name+": "+age;
}
}