Singleton Pattern in Java
Singleton pattern in Java is used to create a Singleton class which is accessed by single instance though out Java program life cycle.Singleton is one of the old but very useful design pattern and used in several core Java libraries including Java Development Kit (JDK); java.lang.Runtime is an example of Singleton pattern in Java. This class represent a single instance of Java environment running as JVM and provides several utility methods to query important details about runtime like a number of available processors, Java heap memory etc. Singletons are also very popular in Java interview and one of the frequently asked question. This article contains a great collection of interview question on Singleton pattern in Java and can be useful to enhance your knowledge on Singleton pattern.
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Singleton pattern in Java is used to create a Singleton class which is accessed by single instance though out Java program life cycle.Singleton is one of the old but very useful design pattern and used in several core Java libraries including Java Development Kit (JDK); java.lang.Runtime is an example of Singleton pattern in Java. This class represent a single instance of Java environment running as JVM and provides several utility methods to query important details about runtime like a number of available processors, Java heap memory etc. Singletons are also very popular in Java interview and one of the frequently asked question. This article contains a great collection of interview question on Singleton pattern in Java and can be useful to enhance your knowledge on Singleton pattern.
