CopyOnArrayList replaceAll() method in Java with Examples
Last Updated :
08 Jan, 2019
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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:
Java
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]
