For both the keys and values of a map : HashMap « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. HashMap

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

public class Main {
  public static void main(String[] argv) throws Exception {
    Map map = new HashMap();
    for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
      Map.Entry entry = (Map.Entry) it.next();
      Object key = entry.getKey();
      Object value = entry.getValue();
    }
  }
}