HashMap.containsValue() method is used to check whether a particular value exists or not in HashMap. Its method return true if there is exists value in hashmap.
Syntax :
public boolean containsValue(Object value) {
}Parameters: It takes value as augment whose presence in this map is to be tested
Return Value : It return true if this map maps one or more keys to the specified value
import java.util.HashMap;
import java.util.Map;
public class HashMapSearchValue {
public static void main(String[] args) {
Map<Integer,String> hm = new HashMap<Integer,String>();
/*
* Associates the specified value with the specified key in
this map (optional operation). If the map previously
contained a mapping for the key, the old value is
replaced by the specified value
*/
hm.put(1,"ankush");
hm.put(2, "amit");
hm.put(3,"shivam");
hm.put(4,"ankit");
hm.put(5, "yogesh");
System.out.println(" value john ="+hm.containsValue("john"));
System.out.println(" value amit ="+hm.containsValue("amit"));
System.out.println(" value piyush ="+hm.containsValue("piyush"));
System.out.println(" value shivam ="+hm.containsValue("shivam"));
}
}Output :
value john =false
value amit =true
value piyush =false
value shivam =true