Check if a particular value exists in Java LinkedHashMap

Use the containsValue() method to check whether a particular value exists in LinkedHashMap or not.

Create a LinkedHashMap −

LinkedHashMap<Integer, String> l = new LinkedHashMap<Integer, String>();
l.put(1, "Mars");
l.put(2, "Earth");
l.put(3, "Jupiter");
l.put(4, "Saturn");
l.put(5, "Venus");

Now, let’s say we need to check whether value “Saturn” exists or not. For that, use the containsValue() method like this −

containsValue("Saturn")

The following is an example to check if a particular value exists in LinkedHashMap −

Example

 Live Demo

import java.util.*;
public class Demo {
   public static void main(String[] args) {
      LinkedHashMap<Integer, String> l = new LinkedHashMap<Integer, String>();
      l.put(1, "Mars");
      l.put(2, "Earth");
      l.put(3, "Jupiter");
      l.put(4, "Saturn");
      l.put(5, "Venus");
      System.out.println("LinkedHashMap elements...");
      System.out.println(l);
      System.out.println("\nDoes value Saturn exist in the LinkedHashMap map? "+l.containsValue("Saturn"));
   }
}

Output

LinkedHashMap elements...
{1=Mars, 2=Earth, 3=Jupiter, 4=Saturn, 5=Venus}

Does value Saturn exist in the LinkedHashMap map? True

Samual Sam

Published on 11-Jan-2019 06:11:15

• Related Questions & Answers
• Check if a particular key exists in Java LinkedHashMap
• Check if a particular value exists in Java TreeSet
• Java Program to check if a particular value exists in TreeMap
• Check if a particular element exists in Java LinkedHashSet
• Java Program to check if a particular element exists in HashSet
• Java Program to check if a particular key exists in TreeMap
• Check if a file exists in Java
• Java Program to check if a given value exists in a HashMap
• Remove a value from Java LinkedHashMap
• Check if value exists for a field in a MongoDB document?
• Check if a value exists in a column in a MySQL table?
• Check if a given key exists in Java HashMap
• Check if a PHP cookie exists and if not set its value
• Check if value exists in a comma separated list in MySQL?
• Check if a File exists in C#