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21 lines
375 B
21 lines
375 B
public class Jb24_Single
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{
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//单例设计模式
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//解决问题：确保一个类在内存中的对象唯一性
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public static void main(String[] args)
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{
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//Single sDemo = Single.getInstance();
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Single sDemo = Single.s; //等同于Single sDemo = Single.getInstance();
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}
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}
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class Single
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{
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static Single s = new single();
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private Single(){};
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public static Single getInstance()
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{
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return s;
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}
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}
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