Java Collection Tutorial - Java Map.containsValue(Object value)

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Syntax

Map.containsValue(Object value) has the following syntax.

boolean containsValue(Object value)

Example

In the following code shows how to use Map.containsValue(Object value) method.

 //  ww  w.j a v a  2s  .c  o  m
import java.util.HashMap;
import java.util.Map;

public class Main {
  public static void main(String[] a) {
    Map<String,String> map = new HashMap<String,String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    System.out.println(map.containsKey("key1"));
    System.out.println(map.containsValue("value2"));
  }
}
  

The code above generates the following result.

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