Use an enum: public enum Foo { INSTANCE; }. Joshua Bloch explained this approach in his Effective Java Reloaded talk at Google I/O 2008: link to video. ... <看更多>
By this time I assume you know the basics and usefulness of a singleton design pattern. Sometimes we endup in a situation where we can not ... ... <看更多>
yes, to create a Singleton class, you have to use the private constructor as it is the only way to prevent another class from creating an instance of your ... ... <看更多>
