java 反射动态调用示例

打印类Print.java

package com.test.reflct;

public class Print {

    public static void print(String str){
        System.out.println("打印测试"+str);
    }
}

调用类

package com.test.reflct;

import java.lang.reflect.Method;

public class Test {

    public static void main(String[] args) {

        try {
            //加载类
            Class<?> printClass =  Class.forName("com.test.reflct.Print");
            //获取方法
            Method printMethod = printClass.getMethod("print",String.class);
            //调用
            printMethod.invoke(printClass.newInstance(),"123");
        } catch (Exception e) {
            e.printStackTrace();
        }    

    }

}