Help understanding some java!

[weezal100]

Hi,
I am learning java and am trying to understand some code that is written in Java 1.5, although I am more used to Java 1.4.2.
Could someone please convert this to java 1.4.2 or instead just tell me what is going on in the code?
thanks it is much appreciated

import java.util.*;

class Match {
	private String sentence;
	private List words = new ArrayList();
	private Sentence sent

// some code removed...
// important part below... (in java 1.5)

	public boolean checking(int c) 
	{
	System.out.print("invoke the check(%d)\n", c);
		if(c > (sentence.length()-1))
	{
		return true;
	}
	for (String s : words)
		{
		if(sentence.substring(c, sentence.length()).startsWith(s))
		{
			sent.addBoundary(c);
			if(check(c+s.length()))
			{
	// System.out.printf("setting the boundary at %d\n", c); 
				return true;
			}
			sent.delBoundary();
		}
	}
		return false;
}

(note:there is another class called sentence that also exist)

[gklue]

From Sun's web site (re: for (String s : words)):

Enhanced for loop
The Iterator class is used heavily by the Collections API. It provides the mechanism to navigate sequentially through a Collection. The new enhanced for loop can replace the iterator when simply traversing through a Collection as follows. The compiler generates the looping code necessary and with generic types no additional casting is required.

Before

ArrayList<Integer> list = new ArrayList<Integer>();
for (Iterator i = list.iterator(); i.hasNext();) {
Integer value=(Integer)i.next();
}




After

ArrayList<Integer> list = new ArrayList<Integer>();
for (Integer i : list) { ... }