The java.util.concurrent.CopyOnArrayList.replaceAll() method in Java replaces each element of this list with the result of applying the operator to the element.
Syntax:
public void replaceAll(UnaryOperator operator)
Parameters: This method accepts a mandatory parameter operator which is to be applied to each element.
Return Type: This method has no return value.
Below Programs illustrate the replaceAll() method of CopyOnArrayList in Java:
Program 1: This program involves CopyOnArraylist replaceAll() method of String Type:
// Java Program to illustrate CopyOnArrayList// replaceAll() method import java.util.concurrent.CopyOnWriteArrayList;import java.util.*;import java.util.function.UnaryOperator; public class GFG { public static void main(String[] args) { CopyOnWriteArrayList<String> ArrLis1 = new CopyOnWriteArrayList<String>(); // Add elements ArrLis1.add("White"); ArrLis1.add("Red"); ArrLis1.add("Blue"); ArrLis1.add("Green"); // print CopyOnWriteArrayList System.out.println("CopyOnWriteArrayList: " + ArrLis1); // check using function ArrLis1.replaceAll(new MyOperator()); // print CopyOnWriteArrayList System.out.println("After replacement CopyonWriteArrayList: " + ArrLis1); }} class MyOperator implements UnaryOperator<String> { public String apply(String t) { return t.replaceAll("Red", "White"); }} |
Output:
CopyOnWriteArrayList: [White, Red, Blue, Green] After replacement CopyonWriteArrayList: [White, White, Blue, Green]
