题解 | #创建单例对象#
创建单例对象
https://www.nowcoder.com/practice/9b316cd2d6264776918bc4bc31f37aec
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() {
if (instance == null) {
instance = new Singleton();
}
return instance;
}
//write your code here......
}
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