foreach not applicable to expression type

Question

what does this error mean? and how do i solve it?

foreach not applicable to expression type.

im am trying to write a method find(). that find a string in a l

Answer 1

Are you using an iterator instead of an array?

http://blogs.oracle.com/CoreJavaTechTips/entry/using_enhanced_for_loops_with

You cannot just pass an Iterator into the enhanced for-loop. The 2nd line of the following will generate a compilation error:

    Iterator it = colony.getPenguins();
    for (Penguin p : it) {

The error:

    BadColony.java:36: foreach not applicable to expression type
        for (Penguin p : it) {

I just saw that you have your own Stack class. You do realize that there is one already in the SDK, right? http://download.oracle.com/javase/6/docs/api/java/util/Stack.html You need to implement Iterable interface in order to use this form of the for loop: http://download.oracle.com/javase/6/docs/api/java/lang/Iterable.html