Can you write thread-safe Singleton in Java?

Deepika Sahu answered on October 19, 2022 Popularity 8/10 Helpfulness 2/10

answer Can you write thread-safe Singleton in Java?

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Can you write thread-safe Singleton in Java?

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There are multiple ways to write thread-safe Singleton in Java, like by writing singleton using double-checked locking, by using static Singleton instance initialized during class loading. 
  By the way, using Java enum to create a thread-safe singleton is the most simple way

Read more: https://www.java67.com/2012/09/top-10-java-design-pattern-interview-question-answer.html#ixzz7oR7H2zOh

Popularity 8/10 Helpfulness 2/10 Language java

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Tags: java singleton

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Contributed on Dec 25 2022

Deepika Sahu

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Java Singleton pattern thread safe

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// Java Singleton pattern, Thread safe
public class Singleton {
	private static Singleton uniqueInstance;
 
	// other useful instance variables here
 
	private Singleton() {}
 
	public static synchronized Singleton getInstance() {
		if (uniqueInstance == null) {
			uniqueInstance = new Singleton();
		}
		return uniqueInstance;
	}
 
	// other useful methods here
	public String getDescription() {
		return "I'm a thread safe Singleton!";
	}
}

public class SingletonClient {
	public static void main(String[] args) {
		Singleton singleton = Singleton.getInstance();
		System.out.println(singleton.getDescription());
	}
}

Popularity 9/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: singleton java

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Contributed on Oct 19 2022

Grotesque Gibbon

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Can you write thread-safe Singleton in Java?

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Can you write thread-safe Singleton in Java?

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Java Singleton pattern thread safe

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