single design pattern
Singleton Design Pattern is basically limiting our class so that
whoever is using that class can only create 1 instance from that class.
I create a private constructor which limits access to the instance of the class.
Than I create a getter method where we specify how to create&use the instance.
- I am using JAVA Encapsulation OOP concept.threadsafe singleton pattern in java
package com.journaldev.designpatterns;
public class ASingleton {
private static volatile ASingleton instance;
private static Object mutex = new Object();
private ASingleton() {
}
public static ASingleton getInstance() {
ASingleton result = instance;
if (result == null) {
synchronized (mutex) {
result = instance;
if (result == null)
instance = result = new ASingleton();
}
}
return result;
}
}Copyright © 2021 Codeinu
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