Examples of using Java's 'for each' loop structure

ForEach.java

import java.util.ArrayList;
import java.util.List;

public class ForEach {

    public static void main(String[] args) {

        // Let's say we have a plain old array, like this one.
        char[] array = "This is a character array.".toCharArray();

        // So far in class we have been looping over it by using the classic syntax
        for(int i = 0 ; i < array.length ; ++i) {
            char element = array[i];
            System.out.print(element);
        }

        // That works fine, but its sort of annoying to have to write all those details
        // like counter variables and increments all the time. Its noisy code.

        // Java 5 introduced a handy concept called 'for each' loops
        // Using it saves us some of the trouble of writing looping code.
        for(char element : array) {
            System.out.println(element);
        }

        // The structure is as follows..
//      for(type nameOfElement : nameOfCollection) {
//          code that references nameOfElement
//      }

        // It works for just about any of the Java collections as well.
        List<String> list = new ArrayList<String>();
        list.add("much");
        list.add("better");

        for(String element : list) {
            System.out.println(element);
        }

    }
}