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AutomicInteger in Java
Posted: Dec 26, 2015 5:29 AM
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Original Post: AutomicInteger in Java
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Java.util.concurrent.atomic package provides very useful classes that support lock free and thread safe programming. The main use of this class is an int value that may be updated automatically. AtomicInteger has some useful methods. Before that lets see the some points about this class. Commonly we will use this AtomicInteger to handle the counter that is accessible by different threads simultaneously. Java.util.concurrent.atomic.AtomicInteger: public class AtomicInteger extends Number implements Serializable AtomicInteger Class Constructors: public AtomicInteger(): Creates a new AtomicInteger object with default value 0.AtomicInteger atomicInteger = new AtomicInteger(); public AtomicInteger(int initialValue): Creates a new AtomicInteger object with given initial value.AtomicInteger atomicInteger = new AtomicInteger(10);
AtomicInteger Class Methods: 1.public final void set(int newValue): Sets given value to the object.1. Java Program to create AtomicInteger class object and sets some value. package com.instaceofjava; import java.util.concurrent.atomic.AtomicInteger; public class AtomicIntegerExample{ public static void main(String[] args) { AtomicInteger atomicInteger = new AtomicInteger(); System.out.println(atomicInteger); atomicInteger.set(10); System.out.println(atomicInteger); } } Output:
2.public final void get(): Used to get current value. 2. Java Program to create AtomicInteger class object and sets some value and get. package com.instaceofjava; import java.util.concurrent.atomic.AtomicInteger; public class AtomicIntegerExample{ public static void main(String[] args) { AtomicInteger atomicInteger = new AtomicInteger(); System.out.println(atomicInteger.get()); atomicInteger.set(10); System.out.println(atomicInteger.get()); } } Output:
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