Singleton mode of Java multithreaded programming
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Java
Deferred loading means that an instance is created when the getInstance () method is called. A common method is to instantiate new in the getInstance () method. The implementation code is as follows:
However, because there are multiple statements in getInstance (), there may be thread safety problems. The operation results also show that:
Even if there are more statements in getInstance (), there will be three different objects. Thread (3000) is added to the if (MyObject = = null) statement block. The results show that:
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