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kkdeok/Singleton Pattern

Last active August 20, 2020 05:33
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Design Pattern
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Singleton Pattern
class Singleton {
// As soon as field is declared, instance is created in the memory.
// It prevents exceptional case like multiple instances are created
// by multi-thread. We don't need to use keywork 'synchronize' in
// getInstance(). We just can ignore this case.
private static Singleton instance = new Singleton();
// private constructor
private Singleton() {}
public static Singleton getInstance() {
return instance;
}
}
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