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An exceedingly common for-loop to write is the following;
Stuff[] s array = new Stuff[n]; // fill s array with values for(int i = 0; i < s array.length; i++) { // do something with s array[i] }
Essentially, the loop does some invariant processing on every element of the array. To make life easier, Java implements the for-each loop, which is just an alternate for loop syntax:
Stuff[] s array = new Stuff[n]; // fill s array with values for(Stuff s:s array) { // do something with s }
Simpler, eh?
It turns out that the for-each loop is not simply relegated to array. Any class that implements the Iterable interface will work. This is discussed in another module, as it involves the use of generics.
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