23 lines
577 B
Java
23 lines
577 B
Java
package cn.edu.zust.dubbo;
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public class SingletonPattern {
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private static SingletonPattern instance;
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private SingletonPattern() {}
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public static SingletonPattern getInstance() {
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if (instance == null) {
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instance = new SingletonPattern();
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}
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return instance;
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}
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public void showMessage() {
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System.out.println("Singleton Pattern Demo");
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}
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public static void main(String[] args) {
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SingletonPattern singleton = SingletonPattern.getInstance();
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singleton.showMessage();
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}
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} |