In your case which uses a Map, you could try it using the Map.Entry
object which contains complete key-value pair for each entry in the
Map. The loop code would be something like this (untested though...):
for (Map.Entry<String, Test> entry : a.entrySet()) {
String key = entry.getKey();
Test value = entry.getValue();
//now do things with key and value...
}
This example uses the enhanced for-loop which in the above case puts
each key-value pair into the 'entry' object in turn so that you can
work with them inside the for-loop. Because of that you actually don't
need to create the Iterator objects.
This should be OK unless of course you need to use the remove() method
or any of the other things that the for-each loop doesn't support. In
that case I guess you'd use an Iterator for which I found a Generics
based approach and one that uses casts here:
http://www.sergiy.ca/how-to-iterate-over-a-map-in-java/
Have fun.
On 15/02/2010, at 9:29 AM, Montreal Canadien wrote:
import java.awt.Point;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;
public class Main {
public static void main(String[] argv) {
TreeMap<String, Test> a;
a = new TreeMap<String, Test>();
a.put("10100", new Test(new Point(1, 2)));
Iterator<String> b = a.keySet().iterator();
Iterator<Test> c = a.values().iterator();
}
}
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