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AtomicIntegerArray lazySet() method in Java with Examples
  • Last Updated : 27 Feb, 2019

The Java.util.concurrent.atomic.AtomicIntegerArray.lazySet() is an inbuilt method in Java that eventually sets a given value at any given index of an AtomicIntegerArray. The method takes the index value of the AtomicIntegerArray and the value to set as the parameters and updates the previous value without returning anything.

Syntax:

public final void lazySet(int i, int newValue)

Parameters: The function takes two parameters:

  • i which is the index value where the update is to made.
  • newValue which is the new value to update at the index.

Return Value: The function does not return any value.

Below programs illustrate the above method:



Program 1:




// Java program that demonstrates
// the lazySet() function
  
import 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;
  
        // The new value to update at idx
        int val = 10;
  
        // Updating the value at
        // idx applying lazySet
        arr.lazySet(idx, val);
  
        // Displaying the AtomicIntegerArray
        System.out.println("The array after"
                           + " update : "
                           + arr);
    }
}
Output:
The array : [1, 2, 3, 4, 5]
The array after update : [10, 2, 3, 4, 5]

Program 2:




// Java program that demonstrates
// the lazySet() function
  
import 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;
  
        // The new value to update at idx
        int val = 100;
  
        // Updating the value at
        // idx applying lazySet
        arr.lazySet(idx, val);
  
        // 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, 100, 5]

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicIntegerArray.html#lazySet-int-int-

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