AtomicInteger addAndGet() method in Java with examples
The java.util.concurrent.atomic.AtomicInteger.addandget() is an inbuilt method in java which adds the value which is passed in the parameter of the function to the previous value and returns the new updated value which is of data-type int. Syntax:
public final int addAndGet(int val)
Parameters: The function accepts a single mandatory parameter val which specifies the value to be added. Return value: The function returns the integer value after addition is done. Program below demonstrates the function: Program 1:
Java
import java.util.concurrent.atomic.AtomicInteger;
public class GFG {
public static void main(String args[])
{
AtomicInteger val
= new AtomicInteger();
int c = val.addAndGet( 6 );
System.out.println("Updated value: "
+ c);
}
}
|
Program 2:
Java
import java.util.concurrent.atomic.AtomicInteger;
public class GFG {
public static void main(String args[])
{
AtomicInteger val
= new AtomicInteger( 18 );
System.out.println("Previous value: "
+ val);
val.addAndGet( 6 );
System.out.println("Updated value: "
+ val);
}
}
|
Output:
Previous value: 18
Updated value: 24
Program 3:
Java
import java.io.*;
import java.util.concurrent.atomic.AtomicInteger;
class GFG {
public static void main(String[] args) throws InterruptedException
{
AtomicInteger count = new AtomicInteger( 0 );
Thread thread1 = new Thread(() -> {
for ( int i = 0 ; i < 1000 ; i++) {
count.incrementAndGet();
}
});
Thread thread2 = new Thread(() -> {
for ( int i = 0 ; i < 1000 ; i++) {
count.incrementAndGet();
}
});
thread1.start();
thread2.start();
thread1.join();
thread2.join();
System.out.println( "Final count: " + count.get());
}
}
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Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicInteger.html#addAndGet-int-
Last Updated :
27 Feb, 2023
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