import java.util.HashMap;
import java.util.Map;
public class HashMapSearchKey {
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”);
/*
* Returns true if this map contains a
* mapping for the specified key
*/
System.out.println(“key 1 =”+hm.containsKey(1));
System.out.println(“key 20 =”+hm.containsKey(20));
System.out.println(“key 9 =”+hm.containsKey(9));
System.out.println(“key 5 =”+ hm.containsKey(5));
}
}
Output:
key 1 =true
key 20 =false
key 9 =false
key 5 =true