java 反射 构造器私有化创建对象

  构造器非私有化时
package reflect;

import java.lang.reflect.Constructor;

public class Test {
	public static void main(String[] args) throws Exception, NoSuchMethodException {
		Class clas = Class.forName("reflect.Single");
		System.out.println(clas.newInstance());	}
}


class Single{
	public  String name = "fuck";
	
	public String get(){
		return this.name;
	}
}

  构造器私有化时
package reflect;

import java.lang.reflect.Constructor;

public class Test {
	public static void main(String[] args) throws Exception, NoSuchMethodException {
                  Class clas = Class.forName("reflect.Single");
		Constructor c0 = clas.getDeclaredConstructor();
		c0.setAccessible(true);
		Single sin = (Single)c0.newInstance();
		System.out.println(sin);
                  	}
}


class Single{
	public  String name = "fuck";
	private Single(){
	}
	public String get(){
		return this.name;
	}
}