AtomicLong getAndAdd() method in Java with examples
Last Updated :
29 Jan, 2019
The Java.util.concurrent.atomic.AtomicLong.getAndAdd() is an inbuilt method in java that adds the given value to the current value and returns the value before updation which is of data-type long.
Syntax:
public final long getAndAdd(long val)
Parameters: The function accepts a single mandatory parameter val which specifies the value to be added to the current value.
Return value: The function returns the value before addition is performed to the previous value.
Below programs illustrate the above method:
Program 1:
import java.util.concurrent.atomic.AtomicLong;
public class GFG {
public static void main(String args[])
{
AtomicLong val = new AtomicLong( 0 );
long res
= val.getAndAdd( 7 );
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
}
|
Output:
Previous value: 0
Current value: 7
Program 2:
import java.util.concurrent.atomic.AtomicLong;
public class GFG {
public static void main(String args[])
{
AtomicLong val = new AtomicLong( 18 );
System.out.println( "Previous value: "
+ val);
long res = val.getAndAdd( 8 );
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
}
|
Output:
Previous value: 18
Previous value: 18
Current value: 26
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicLong.html#getAndAdd-long-
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