import java.io.*; import java.util.*; public class Test { public static void main(String args[]) throws IOException { HashMap <String, Integer> a = new HashMap <String, Integer> (); a.put("abc", new Integer(10)); a.put("xyz", new Integer(20)); System.out.println(a.containsKey("abc")); System.out.println(a.containsValue(10)); System.out.println(a.get("abc")); } }
true true 10