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


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

public boolean containsValue(Object value)


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

/*from w  ww. j  av a2 s . c  o m*/
import java.util.Map;
import java.util.WeakHashMap;

public class Main {
   public static void main(String[] args) { 
      Map<String, String>  weakHashMap = new WeakHashMap<String, String> ();
      weakHashMap.put("1", "first");
      weakHashMap.put("2", "two");
      weakHashMap.put("3", "from");
      // check existence of value "from"
      System.out.println("Checking value 'three'");

The code above generates the following result.