题解 | #创建单例对象#
创建单例对象
http://www.nowcoder.com/practice/9b316cd2d6264776918bc4bc31f37aec
原来这就是单例对象!!!!
public class Main {
public static void main(String[] args) {
Singleton s1 = Singleton.getInstance();
Singleton s2 = Singleton.getInstance();
System.out.println(s1 == s2);
}
}
class Singleton {
private static Singleton instance;
private Singleton() {
}
public static Singleton getInstance() {
return instance;
}
}
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