Les Morgan

In general, Java is faster because of the JIT Compiler.

Domingas,

As already stated it is impossible to comment on your code when you do not include it.

Here is a general rule of thumb that I use when doing graphics:

Draw your background image to your graphics context, this clears your screen; then draw your objects into the graphics context, that makes it appear that your objects can float over your background; use double buffering to keep the flicker down.

Roger,

Paul brings up a very valid point, but to answer your question:

Most programming problems are born out of 3 things: scope, visibility, and life. In order to use the methods and properties of an object, you have to get a reference to that object.  To get a reference to an object you have to have visibility of that object. To have visibility of an object it has to be in the scope you are coding.  In order for it, or a reference, to be in the scope you are coding, the object has to be live.

So basically, you get a reference to the object, then you can use any of its appropriately methods or properties that are appropriately visible to you.

Jon,

There are 4 instances that I can think of where I use static:

1 -- Factories: I don't want to have to instantiate a factory just to use it.
2 -- Class Variables: they are like wormholes, they are the same throughout the universe. If you don't know what that means, then don't use them.
3 -- Interfaces: you can add static and default methods to an interface and not have to recompile the project--static and default are not the same thing.
4 -- constants: static final--they are what they are and you cannot change them anywhere.

There are probably more, but the very best thing I can say is: as a general rule of thumb, don't use them. So unless you know you really want them, what they do for the instance you want, and specifically what the side effects are in using them.

Could you give us a little more to go on? Are you looking to store in a DB or just "trick your admins"?

Using NetBeans it is very easy to make a JAR:

On the menu choose "Run" / "Clean and Build Project"

once it is done, the JAR can be found in the "dist" (distribution) folder of your project director.

the -cp option is a commandline option that can be used to set the classpath, path, that your OS uses to search for your Java support files.

I was surprised at your statement about google not having any references... so here is a google search parameter list that should get you tons of answers for your subject: "java classpath environment variable"

BTW: when I tried googling class path and java classpath -cp and all combinations thereof, I received many, many hits... more than I cared to follow.

I look at the code you posted and reviewed your question, the quandary that I am left with is: "This is not your code." The next thing that comes to mind is that it looks a lot like a homework problem from HS or an entry level comp sci class, either being the case, then I'll assume you are taking it to get a grade. The next quandary that comes to mind is: "How are you going to give me credit for your course for doing your homework?"

So... Do you have a specific question, other than, please do my homework for me, like: I don't understand what a binary tree does... tons of examples on google there, or how do I decide if it's a left node or right node--also tons of examples there on google.

If you have a specific question, please ask.  while this is not a homework service, there are many experienced programmers waiting to help you understand, but no do the work for you.

You have "before" and "after" that you can use it's very simple:

return myCalendar.before(newCalendar): // returns true if the date is before myCalendar;

return myClaendar.after(newCalendar); // returns true if new Calendar is after myCalendar;

I see, and a very good point indeed. I think then that I would randomly generate a point, and do an area search for the highest probability in that area, probably using the grid overlay idea on too of the area.

So lay the grid out, I like the 2X2, and take a random shot, then search say 2 or 3, or even a random number, grids in each direction from the random shot, and choose the highest probability in the area.

Rafael,

I do not see your problem, the logic is identical; if you did it, as you say, before, then you are still just doing a boolean check to see if something is selected or not.

What are you having the problem with?

Les

Carey,

I am afraid my thinking goes along this line: since you have probabilities and there are ships of finite sizes, then I would overlay a grid and pick the highest probabilities from that grid. So in the classic Battle Ship, you have 2, 3, 4, and 5 hole boats.  I would start with the 2 grid and choose the coordinates with the highest probability.

Les

Claude,

If I am correct in my understanding, then you want to know how many PoJo's there are (objects that have been created).  This seems like an excellent place to take advantage of a Class Variable.

public class MyPoJo{ private static int iPoJo = 0;   public MyPoJo(){     iPoJo++;   }   public int count(){     return iPoJo; }

With each "new MYPoJo()", the creation of an object of type MyPoJo, then the counter gets incremented by 1.  This Class Varaible, iPoJo , is referenced in each instance of a MyPoJo object.

Les

German,

You are absolutely right, the static definition of i, in the body of the object makes i a Class variable, and it is very useful in some cases, but not if you do not expect what it does. The difference is one thing I wanted my son to see as an introduction fo use of static members.

Les

Nick,

Sorry I was not in last week to see your post, but if you're still looking: you can do what you ask in a JScrollpane using HTML, there are a couple of ways to do it, but clever formatting of the HTML div objects using style sheets will accomplish what you want. I had a similar project in C# this last week, and out project turned out beautiful and executed exacly as the client wanted it to display.

Les