AtomicLong getAndDecrement() method in Java with examples
Last Updated :
29 Jan, 2019
The Java.util.concurrent.atomic.AtomicLong.getAndDecrement() is an inbuilt method in java that decreases the given value by one and returns the value before updation which is of data-type long.
Syntax:
public final long getAndDecrement()
Parameters: The function does not accepts a single parameter.
Return value: The function returns the value before decrement operation 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.getAndDecrement();
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
}
|
Output:
Previous value: 0
Current value: -1
Program 2:
import java.util.concurrent.atomic.AtomicLong;
public class GFG {
public static void main(String args[])
{
AtomicLong val
= new AtomicLong( 18 );
long res = val.getAndDecrement();
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
}
|
Output:
Previous value: 18
Current value: 17
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicLong.html#getAndDecrement–
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