How can we access objects in a Hash Map?

[Samrat Som]

I was being interviewed recently, where I was asked can we access object stored in a hashmap , if the key to that particular object stored in the HashMap is not known.

[Christophe Verré]

The API allows you to retrieve all values from the Map. It also has a method to check whether a particular object is set as a value of the Map. Check java.util.Map.

[Chaitanya Jadhav]

hi,

Map m =new HashMap();
		 m.put("ff",3);
		 m.put("ff22",23);
		 m.put(33,"aa");

	  //  # 1  using entrySet(); 
	 Set s1=m.entrySet();
	 for ( Object t: s1 ) {
		 
		 System.out.println(t);
	 }
	
	 //  # 2  using keySet(); 
     Set s2=m.keySet(); 
	 for ( Object t: s2 ) {

		 System.out.println(" - "+m.get(t));
	 }