package com.mycon.app;import java.lang.reflect.Constructor;import java.util.Arrays;public class SingletonTest {        @SuppressWarnings("rawtypes")    public static void main(String[] args) {        Singleton singleton = Singleton.getInstance();        System.out.println(singleton.getName());        Singleton s2 = null;        try {            Constructor[] constructors = Singleton.class.getDeclaredConstructors();            System.out.println(constructors.length);            for (Constructor c : constructors) {                System.out.println(c.getName());                Class[] params = c.getParameterTypes();                System.out.println("Class params:" + Arrays.toString(params));                if (params.length == 1) {
　　　　　　　　　　　　// 取消语法检查                    c.setAccessible(Boolean.TRUE);                    s2 = (Singleton)c.newInstance(new Object[]{"Swift"});                    break;                }            }        } catch (Exception e) {            e.printStackTrace();        }        System.out.println("s2:" + s2);        System.out.println("s2-name:" + s2.getName());        System.out.println("s1-name:" + singleton.getName());    }}　　　　

package com.mycon.app;public class Singleton {        private String name;    private Singleton(String name) {        this.name = name;    }        public static Singleton getInstance() {        return SingletonHolder.SINGLETON_HOLDER;    }    private static class SingletonHolder {        public static final Singleton SINGLETON_HOLDER = new Singleton("Jack");    }        public String getName() {        return name;    }}