BP Forums - Programming Help

Draw on JPanel

Thu, 10 Apr 2014 11:55:45 +0000

Can someone explaine to me how to draw on JPanel?
I want to make the snake game a runnable jar.

Here is the Project archive.
https://www.dropbox.com/s/hp7ga6mce34uu1g/Snake0.jar

Thanks!

Making a random int

Sun, 23 Mar 2014 11:52:50 +0000

Hello I've got this code, and I hope you can help me out a little bit.
[code2=java]import java.util.Random;
public class objectIntro {

public static void main(String[] args)
{
String a = "blabla";
String b = "lala";
Random weight = new Random();
//Random rnd = new Random();
//System.out.println("The weight is: " + rnd.weight(100));
if(weight <= 55)
{
System.out.println(b + "is slimmer then: "+ a);
}else if(weight >= 80)
{
System.out.println(a + " is fatter then: "+ b);
}

}

}[/code2]

So what does not work?
I want to make the weight int. random and later it can show who is fatter/smaller.
Like the output:

The weight it: (random generated) 83
blabla is fatter then lala

please help me.

GRTZ,
- mustafa6155

Drunk_Snake Game PLEASE HELP!!

Sun, 29 Dec 2013 12:16:49 +0000

Hello everyone! I'm trying to implement a funny version of the snake game posted on youtube by brandonioproduction , and I'm kind of stucked. The idea is to make the snake wobble after eating some fruits ( that in the end will be changed to beers " title="Wink" /> )
so by the move() when the snake is going direction.NORTH for example , the coordinates are (head.x , head.y -1) so it goes straight up.
I have to implement something that changes the head.x like this:

case Direction.NORTH:
newPoint = new Point(head.x -1, head.y - 1);
then
newPoint = new Point(head.x +1, head.y - 1);
then
newPoint = new Point(head.x -1, head.y - 1);
then
newPoint = new Point(head.x +1, head.y - 1);

so you get the idea here. The snake would zigzag in x axis when moving vertically. and of course also would zigzag in the y axis when going horizontally.

Any Ideas are very welcome !!
cheers!

How to export Snake Game as a Runnable JAR file?

Wed, 20 Nov 2013 06:01:26 +0000

Hi Guys.

I got the snake Game working great and I made a few changes to it too. And I was wondering if there is any way that I can save this as a 'Runnable Jar' file, so I can give it to my friend and try it without having Eclipse. Because it always give me an error like "couldn't find the main". I looked in the code provided by BrandonioProductions as well, and there wasn't any 'public static void main(String[] args)'.

Thanks,
Any help would be appreciated

Help finding problem

Tue, 22 Oct 2013 20:09:54 +0000

I have been following these tutorials but I can't seem to find the problem. I changed some names just so that it makes me think a little more.
Here is what i have:

Code:
public class digitextractor {

    int number = 0;

    String snumber = "";

    public digitextractor(int numberSequence) {

        int number = numberSequence;

    }

    public digitextractor(String numberSequence){

        snumber = numberSequence;

    }

    public void returnorder(){

        int integer1 = 0;

        int integer2 = 0;

        int integer3 = 0;

        int integer4 = 0;

        int integer5 = 0;

        integer1 = (number % 10);

        integer2 = (number % 100) / 10;

        integer3 = (number % 1000) / 100;

        integer4 = (number % 10000) / 1000;

        integer5 = (number % 100000) / 10000;

        System.out.println(integer1 + "\n" + integer2 + "\n" + 

    integer3 + "\n" + integer4 + "\n" + integer5);

    }

    public void returnorderThroughString(){

        char part1;

        char part2;

        char part3;

        char part4;

        char part5;

        part1 = snumber.charAt(4);

        part2 = snumber.charAt(3);

        part3 = snumber.charAt(2);

        part4 = snumber.charAt(1);

        part5 = snumber.charAt(0);

        System.out.println(part1 + "\n" + part2 + "\n" + part3 + "\n" + part4 + "\n" + part5);

    }

}

Code:
import java.util.Scanner;

public class digitfinished {

    static Scanner input = new Scanner(System.in);

    public static void main(String[] args) {

        // process starts

        System.out.println("Welcome to this thing." + "\n" + "Enter your number");

        String in = input.nextLine();

        digitextractor product = new digitextractor(Integer.parseInt(in));

        product.returnorderThroughString();

        System.out.println("Using Strings");

        digitextractor output = new digitextractor(in);

        output.returnorderThroughString();

    }

}

NumberFormatException with Snake

Mon, 16 Sep 2013 11:04:17 +0000

Hi! I'm following the 8th video of the Snake tutorial and I seem to have missed something and/or completely screwed up. I just started trying to learn Java today and after watching the Tutorials I got started on following the Snake videos. I learn well by example, so these have all been fantastic. I've been at it for hours now, and I can't seem to find what I've done wrong here. The file on the snake page here doesn't have the High Score part added, otherwise I would compare that and mine. Any help would be much appreciated!

Here is the error message:

Exception in thread "Thread-3" java.lang.NumberFormatException: For input string: " 40"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at snakeCanvas.CheckScore(snakeCanvas.java:175)
at snakeCanvas.Move(snakeCanvas.java:142)
at snakeCanvas.run(snakeCanvas.java:267)
at java.lang.Thread.run(Unknown Source)

Here is my progress:
http://pastebin.com/w7zjJ1fe

the snake game don't like me.

Thu, 22 Aug 2013 17:10:28 +0000

I keep geting this error message:

Exception in thread "Thread-3" java.lang.ArrayIndexOutOfBoundsException: 1

at Snake.snakeCanvas.CheckScore(snakeCanvas.java:173)

at Snake.snakeCanvas.Move(snakeCanvas.java:156)

at Snake.snakeCanvas.run(snakeCanvas.java:288)

at java.lang.Thread.run(Unknown Source)

Can anyone help?

Button

Fri, 10 May 2013 14:22:44 +0000

I've got the window and the back buffer setup, but how do I make the buttons, where do I put it in the class which class do I put it in, and how do I set the location?

Help with the java code

Wed, 01 May 2013 14:12:23 +0000

I need help this has to be before mothers day. Can anyone tell me the java code so I can make java read an audio file or is it the same as making it read a text file I am using eclipse

Calculator

Mon, 29 Apr 2013 03:05:43 +0000

I'm slowly learning java, mostly from Brandonio21's videos, and I have run into a problem. I need to know what I need to do with this code:
[code2=java]package howto;

import javax.swing.JOptionPane;

public class Calculator {

public static void main(String[] args)
{
JOptionPane myIO = new JOptionPane();
double inputText = myIO.showInputDialog("Please enter length:");
double lingth = inputText;
double inputText1 = myIO.showInputDialog("Please enter length:");
double width = inputText1;

double area = (lingth * width) / 2;

JOptionPane.showMessageDialog(null, "The area of the triangle is: " + area);
}
}[/code2]
I need help soon because it is for a school project called "How to".

Mobile Development

Sun, 07 Apr 2013 14:48:51 +0000

I want to do some 'droid development and I'm looking for the best way to get up to speed quickly. Everybody says Java is the way to go, but I'd like to find a 'trail' that will get me there. "There's an app for that," right? I want to write some of those apps and publish them in the Play Store. Any suggestions?