The Java.util.concurrent.atomic.AtomicLong.decrementAndGet() is an inbuilt method in java that decreases the previous value by one and returns the value after updation which is of data-type long.
Syntax:
public final long decrementAndGet()
Parameters: The function does not accepts a single parameter.
Return value: The function returns the value after decrement operation is performed to the previous value.
Below programs illustrate the above method:
Program 1:
Java
// Java program that demonstrates// the decrementAndGet() functionimport java.util.concurrent.atomic.AtomicLong;public class GFG { public static void main(String args[]) { // Initially value as 0 AtomicLong val = new AtomicLong(0); System.out.println("Previous value: " + val); // Decrement and get long res = val.decrementAndGet(); // Prints the updated value System.out.println("Current value: " + res); }} |
Output:
Previous value: 0 Current value: -1
Program 2:
Java
// Java program that demonstrates// the decrementAndGet() functionimport java.util.concurrent.atomic.AtomicLong;public class GFG { public static void main(String args[]) { // Initially value as 18 AtomicLong val = new AtomicLong(18); System.out.println("Previous value: " + val); // Decrement and get new value long res = val.decrementAndGet(); // Prints the updated value System.out.println("Current value: " + res); }} |
Output:
Previous value: 18 Current value: 17
