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Update JavaConcurrencyAdvancedCommonInterviewQuestions.md

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shuang.kou 2020-05-16 15:31:26 +08:00
parent e099364b31
commit 767e712351
1 changed files with 1 additions and 1 deletions
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docs/java/Multithread/JavaConcurrencyAdvancedCommonInterviewQuestions.md
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@ -73,7 +73,7 @@ public class Singleton {
private Singleton() {
}
public static Singleton getUniqueInstance() {
public synchronized static Singleton getUniqueInstance() {
//先判断对象是否已经实例过，没有实例化过才进入加锁代码
if (uniqueInstance == null) {
//类对象加锁