java.util.TreeMap.containsValue() Method

Description

The containsValue(Object value) method is used to return true if this map, maps one or more keys to the specified value.

Declaration

Following is the declaration for java.util.TreeMap.containsValue() method.

public boolean containsValue(Object value)

Parameters

value − This is the value whose presence in this map is to be tested.

Return Value

The method call returns true if a mapping to this value exists otherwise false.

Exception

NA

Example

The following example shows the usage of java.util.TreeMap.containsValue() method.

package com.tutorialspoint;

import java.util.*;

public class TreeMapDemo {
   public static void main(String[] args) {
      
      // creating tree map 
      NavigableMap<Integer, String> treemap = new TreeMap<Integer, String>();

      // populating tree map
      treemap.put(2, "two");
      treemap.put(1, "one");
      treemap.put(3, "three");
      treemap.put(6, "six");
      treemap.put(5, "five");

      System.out.println("Checking value");
      System.out.println("'three' exists: "+ treemap.containsValue("three"));
   }    
}

Let us compile and run the above program, this will produce the following result.

Checking value
'three' exists: true

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