通过反射访问私有方法

package com.dy.xidian;

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

class A {
private void a() {
System.out.println("This is a function");
}
}
public class TestReflect {
public static void main(String[] args) throws NoSuchMethodException,
SecurityException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException {
A a = new A();
Method g = a.getClass().getDeclaredMethod("a");
g.setAccessible(true);
g.invoke(a);
}
}