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:
// Java program that demonstrates// the getAndDecrement() function import java.util.concurrent.atomic.AtomicLong; public class GFG { public static void main(String args[]) { // Initially value as 0 AtomicLong val = new AtomicLong(0); // Decreases and gets // the previous value long res = val.getAndDecrement(); // Prints the updated value System.out.println("Previous value: " + res); System.out.println("Current value: " + val); }} |
Output:
Previous value: 0 Current value: -1
Program 2:
// Java program that demonstrates// the getAndDecrement() function import java.util.concurrent.atomic.AtomicLong; public class GFG { public static void main(String args[]) { // Initially value as 18 AtomicLong val = new AtomicLong(18); // Decreases 1 and gets // the previous value long res = val.getAndDecrement(); // Prints the updated value System.out.println("Previous value: " + res); System.out.println("Current value: " + val); }} |
Output:
Previous value: 18 Current value: 17
