Question

You are attempting questio
What would be the output generated by the following code?
import java.util.concurrent.+;
public class Main {
public static void main(String[] args)
{
ConcurrentHashMap chm = new ConcurrentHashMap();
chm.put(1, "Welcome");
chm.put (2, "to");
chm.put(3, "Java");
chm.put(4, "World");
chm.putIfAbsent (3, "World");
System.out.println("Elements: " + chm);
chm.remove (2, "Welcome");
System.out.println("Elements after key 2 is removed: "+chm);
chm. putIfAbsent (3, "Java's");
System.out.println("Add new: "+chm);
chm.replace(3, "Java", "Java New");
System.out.println("After Replacing: "+ chm);
}​

Answer 1

Answer:

You are attempting questio

What would be the output generated by the following code?

import java.util.concurrent.+;

public class Main {

public static void main(String[] args)

{

ConcurrentHashMap chm = new ConcurrentHashMap();

chm.put(1, "Welcome");

chm.put (2, "to");

chm.put(3, "Java");

chm.put(4, "World");

chm.putIfAbsent (3, "World");

System.out.println("Elements: " + chm);

chm.remove (2, "Welcome");

System.out.println("Elements after key 2 is removed: "+chm);

chm. putIfAbsent (3, "Java's");

System.out.println("Add new: "+chm);

chm.replace(3, "Java", "Java New");

System.out.println("After Replacing: "+ chm);

}

Answer 2

Explanation:

You are attempting questio

What would be the output generated by the following code?

import java.util.concurrent.+;

public class Main {

public static void main(String[] args)

{

ConcurrentHashMap chm = new ConcurrentHashMap();

chm.put(1, "Welcome");

chm.put (2, "to");

chm.put(3, "Java");

chm.put(4, "World");

chm.putIfAbsent (3, "World");

System.out.println("Elements: " + chm);

chm.remove (2, "Welcome");

System.out.println("Elements after key 2 is removed: "+chm);

chm. putIfAbsent (3, "Java's");

System.out.println("Add new: "+chm);

chm.replace(3, "Java", "Java New");

System.out.println("After Replacing: "+ chm);

}