Singleton Class in Java – Definition, Syntax, and Example
Singleton Class in Java – Definition, Syntax, and Example Singleton Class in Java – Definition, Syntax, and Example The Singleton Class in Java is a design pattern that ensures only one instance of a class exists throughout the application. This is particularly useful when exactly one object is needed to coordinate actions across the system. Definition A Singleton Class is a class that allows only a single instance to be created and provides a global point of access to that instance. Key Points of Singleton Class Only one instance of the class is created. Provides a global access point. Can be implemented using Eager Initialization or Lazy Initialization . Thread safety is important for multi-threaded applications. Syntax class Singleton { // Private static instance private static Singleton singleInstance = null; // Private constructor to prevent instantiation private Singleton() { ...