public class abcd {
public static void main(String[] args)
{
Map testMap = new HashMap();
testMap.put(10, "a");
testMap.put(20, "b");
testMap.put(30, "c");
testMap.put(40, "d");
for (Entry entry : testMap.entrySet()) {
Integer key=entry.getKey();
String value=entry.getValue();
}
}
}