Iterating over a HashMap

Posted by Silveira on 8 April, 2010 Leave a comment (0) Go to comments

Iterating over a HashMap using the enhanced loop (foreach) in Java is a good way to keep your code smaller, more legible and usually more semantically coherent.

import java.util.HashMap;
import java.util.Map;
 
class Foo {}
 
public class Main {
 
   public static void main(String args[]){
      Map<Byte, Foo> mHash;
 
      mHash = new HashMap<Byte, Foo>();
      mHash.put((byte)1, new Foo());
      mHash.put((byte)2, new Foo());
      mHash.put((byte)3, new Foo());
 
      for(Foo f: mHash.values()){
         System.out.println(f.toString());
      }
   }
}