Java反射获取内部类对象

1、测试类
/**

• Created by garfield on 2016/11/18.S
  */
  public class OuterClass {
  public void print(){
  System.out.println(“i am Outer class”);
  }
  class InnerClass{
  void print2(){
  System.out.println(“i am inner class”);
  }
  }
  }
  2、调用内部类方法

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**

• Created by garfield on 2016/11/18.
  */
  public class TestClass {
  public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InstantiationException, InvocationTargetException {
  Class c = Class.forName(“com.newland.sri.utep.OuterClass”);
  //通过方法名获取方法
  Method method = c.getDeclaredMethod(“print”);
  //调用外部类方法
  method.invoke(c.newInstance());
  //内部类需要使用$分隔Classc2=Class.forName("com.newland.sri.utep.OuterClass$InnerClass");
  Method method2 = c2.getDeclaredMethod(“print2”);
  //这时候不能用c2.getConstructors(),已经不存在未声明的构造方法,所以这样写是错的
  method2.invoke(c2.getDeclaredConstructors()[0].newInstance(c.newInstance(),“a”));
  }
  }

原文链接:https://www.cnblogs.com/garfieldcgf/p/6149285.html?utm_source=itdadao&utm_medium=referral