Well, I guess it's because we can't just give you a full solution without you even trying to work something out. Otherwise you wouldn't learn anything would you? However, out of good will I've...

Dear Richard,

I have done some testing and I did not encounter the problem you did. I tested several DOS programs like ping and java and of course javac, using java and even javaw to test out my...

Dear Richard,

I actually wanted to see the command string you passed into Runtime.getRuntime().exec(), not the code in the sense of just Runtime.getRuntime().exec(). We all know that this Java...

Dear Tigerdude, glad that you've worked it out. Well, you shouldn't hold it on your lecturer 'cause people do make mistakes. Logic error anyone? :)

Anyway, what I meant in the first point is that...

Dear Richard, that's an interesting problem I've never encountered. Please give me some time to check it out. In the meantime, could you please state your system specs (Windows or Linux), your PATH...

Hey Tigerdude, I had read through your Floyd-Warshall implementation and I've noticed several things:

Did you make sure that your constant INFINITY did not coincide with any of your edge values...

This is the site:
http://java.sun.com/j2se/1.5.0/download.jsp

If you intend to develop applications in Java, download the JDK or the Java Development Kit. Otherwise, download the JRE (not J2EE),...

You could use reflection (i.e. get the classes at run-time rather than at compile-time). This is safer because com.sun packages may exist on one OS distribution of Java and not another.

Anywho,...

Hi cazaletm, I know that starting out with Java I/O can be a little challenging and I see that you've tried all you can. I will not write the whole program out that satisfies all the requirements,...

import java.util.*;
import java.io.*;

class Gifts {
double dollars;
double euros;
double yen;
double dollarsRate;
double eurosRate;
double yenRate;

Writing to a file is pretty simple with Java. Here's some sample code:

import java.io.*;

public class DoSomeFileOutput {public static void main (String[] args) {try {FileWriter fw = new...