The Java.util.concurrent.atomic.AtomicIntegerArray.decrementAndGet() is an inbuilt method in Java that atomically decrements by one the element at a given index. This method takes the index value and the value to be added as the parameters and returns the updated value at this index.
Syntax:
public final int decrementAndGet(int i)
Parameters: The function accepts a single parameter i which is the index where decrement by one operation is performed.
Return value: The function returns the updated value which is in Integer.
Below programs illustrate the above method:
Program 1:
Java
// Java program that demonstrates// the decrementAndGet() functionimport java.util.concurrent.atomic.AtomicIntegerArray;public class GFG { public static void main(String args[]) { // Initializing an array int a[] = { 1, 2, 3, 4, 5 }; // Initializing an AtomicIntegerArray with array a AtomicIntegerArray arr = new AtomicIntegerArray(a); // Displaying the AtomicIntegerArray System.out.println("The array : " + arr); // Index where operation is performed int idx = 3; // Updating the value at // idx applying decrementAndGet arr.decrementAndGet(idx); // Displaying the AtomicIntegerArray System.out.println("The array after update : " + arr); }} |
Output:
The array : [1, 2, 3, 4, 5] The array after update : [1, 2, 3, 3, 5]
Program 2:
Java
// Java program that demonstrates// the decrementAndGet() functionimport java.util.concurrent.atomic.AtomicIntegerArray;public class GFG { public static void main(String args[]) { // Initializing an array int a[] = { 1, 2, 3, 4, 5 }; // Initializing an AtomicIntegerArray with array a AtomicIntegerArray arr = new AtomicIntegerArray(a); // Displaying the AtomicIntegerArray System.out.println("The array : " + arr); // Index where operation is performed int idx = 0; // Updating the value at // idx applying decrementAndGet arr.decrementAndGet(idx); // Displaying the AtomicIntegerArray System.out.println("The array after update : " + arr); }} |
Output:
The array : [1, 2, 3, 4, 5] The array after update : [0, 2, 3, 4, 5]
