I have created this ping pong game but having problem with ball and paddle collusion. After first collusion it gives score 1 but later it never touch the paddle.
Code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.Random.*;
import javax.swing.ImageIcon;
public class Ball extends JFrame implements ActionListener, KeyListener{
int xSpeed=0;
[Code] ....
I think something is wrong here:
public void actionPerformed(ActionEvent e){
y=y+xSpeed;
repaint();
if(y> this.getWidth()){
y=25;
score -=1;
}
if(blockRect.intersects(ballRect)){
y=40;
score +=1;
x =200;
y = 300;
}
When I ran the methods "go1,go2,go3" separately without clicking on the menu , all of them worked well. by separately I mean, when I closed the program changed the source code from "go1;" to "go2" and go3. But when I click on the "change ball" and then "1 ball" or any thing, all I get is a new frame which is blank. And the old frame freezes.
I was making a pong game, part copied code off the internet, part my own code, part my friends code. It works well enough, but the ball starts at one speed, and stays the same. I would like to know how to make the ball slowly increase.
It is a java applet, which shouldn't casue any harm right?
My code:
Pong Applet
import java.applet.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Pong extends Applet implements MouseMotionListener, KeyListener {
I wrote a code from our text book for Pong. Im trying to figure out how to fill the ball with color. Im also wondering how to speed the ball up once there is contact with the paddle. The initial speed is ok but once contact is made with the paddle, it slows down. Makes it too easy to play. Here is my code so far. As far as the game goes, it works and is good. Just wanted to add a couple customizations.
I'm a beginner at java and am trying to code a basic pong game java applet. The code has no errors in it but when i run it the .png's do not come up in the window until its moved off screen. when the .png's are shown they do not update whatsoever. I thought the problem could be with the key-listener but even the ball (which moves independently of user input) does not move.
I've placed all the code from the 5 classes below. There's some unnecessary code in the background class but that's because I'm thinking of making the background scroll later on.
I can't figure out this problem that I'm having in my Pong game. It's compiling fine, except when I run it, it gives me an overflow error.
Here's the code:
// Pong import javax.swing.JFrame; import java.awt.Color; import java.awt.Graphics; public class Pong extends JFrame { private static final int WIDTH = 400; private static final int HEIGHT = 400;
[Code] .....
Here's the error:
java.lang.StackOverflowError at sun.awt.AppContext.get(AppContext.java:604) at com.sun.java.swing.SwingUtilities3.getDelegateRepa intManager(SwingUtilities3.java:120) at javax.swing.RepaintManager.getDelegate(RepaintMana ger.java:1625) at javax.swing.RepaintManager.addDirtyRegion(RepaintM anager.java:445)
The error keeps going for a lot of more lines.
The line that gets highlighted is the first bracket of the Pong constructor.
I have made a "Pong" game and how to check if the ball has hit the top or the bottom of a paddle, however I do know how to check if it has hit the left or right side:
I don't know how to write a code to pong ball, when it touch red block.
public class bounc2 extends JPanel implements ActionListener,KeyListener{ double x = 0,y=0,velX=3,velY=3; double x2 = 5,y2=145,velX2=0,velY2=0; double x3= 473,y3=145,velX3=0,velY3=0; Timer t = new Timer(5,this); public bounc2(){ setBackground(Color.GREEN);
a) I have a Ball Object which implements the Runnable interface and traces the various positions of a ball.
b) I then have a Ball_Bounce JPanel inside a JFrame which creates two instances of the Ball object and then paints them to the JPanel.
As per my understanding, when the main() program in Ball_Bounce.java is started, there a total of three threads running in this program, one for each ball and one for the main(). What I cannot understand is whenever the balls collide, I end up getting the "Collision" message twice even though the collision is checked only in the main() thread.
[#]public class Ball implements Runnable { private boolean xUp, yUp, xUp1, yUp1; private int x, y, xDx, yDy; private final int MAX_X = 500, MAX_Y = 500; private boolean flag = true; private static Thread ball;
There is a method taken from a class with several try and catch blocks. If you think it is possible, add one more catch block to the code to catch all possible exceptions, otherwise say 'Not possible' with your reason.
import javax.swing.Timer; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Ball extends JPanel { private int delay = 10; private Timer timer = new Timer(delay, new TimerListener()); private int x = 0; private int y = 0;
I am writing a three part program that essentially works like a magic 8 ball. I have the switch/case part which gives the answers from a random number generator, then I also have a graphics file to create the ball as a visual. Lastly I have the frame to display the ball. The problem I am having is that, I am trying to make the program so that when you type in a question and press return the ball will show the answer and then you can type another question and press return and the ball will show a different answer. To quit you would simply type "quit". Right now however the ball is not showing up in my frame until I type quit, then to ask another question I have to end the run and start over again. Here is my program so far:
Case/Switch: public class MagicEightBall { private int number; private String answer;
I am doing an assignment which involves creating a maze and a ball that needs to go through the maze to an end tile then stop the scenario. The maze is made up of 208 buttons in a Jbutton Grid layout. I am replacing certain buttons with a brown tile icon to make up the maze. The ball needs to run along those brown tiles as its path and not be able to move off the brown tile icon images.
I have built the maze and have got quite far with this but now I am stumped on the concept of keeping the ball within the boundary edges and on the brown tiles. I have been told to use if statements, but not had the process explained to me in a way I can understand.
Actually, i want to create multiple ball using multithreading.I have created a class 'CreateBall' and this class is making ball and second class 'Balls' is a Panel where the ball is display.But only one ball is being displayed.
Here is my code.......
CreateBall.java import java.awt.*; public class CreateBall implements Runnable { int px,py; int w=20,h=20; Graphics g; public CreateBall(int px,int py)
I'm trying to do is get this ball to bounce around the screen and ive gotten so far but not sure how to proceed. The ball keeps disappearing.
//bouncing ball
float x; //ball x position float dx = 3; //ball x direction is right, step 5 float y; //ball y position float dy = 3; void setup () //runs once at start
I want to make a simply game,actualy not a game but I want to moving object curve just like angry bird. Where I can move an object with curve motion. But I don't know how. I just can make it move straight(left,right,down,up).
I've got to make a ball bounce around a screen.... From what I can gather they seem to hold back useful java code.
anyway, i've changed the code over and over, and think this is the most succinct way i can manage it. but i have a problem. where i've marked the code (*****) and the following line are conditional on each other. so one won't provide the correct answer without the other line executing first, and vice versa (ignore the code after, i haven't looked at where that should be yet ). Anyway I don't really want to rip the code apart, again, because i'm pretty sure it's close.
I am making an edit page and I want to populate my drop down menu with things that were already selected. For example, if i want i click to edit my favorite food it will be populated with the one the user previously selected. How do i go about doing this? [URL] ....
I have a web application. I want to generate the UI part(basically html/jsp pages) to be generated dynamically using drag and drop of elements.So is there is any way that I can:
1: Have drag and drop of elements in jsps? 2: How I can create and store back the form attributes dynamically?
I am just trying to understand during a drag and drop how can I transfer the actual object instead of just creating a new one. I believe I am close but I cannot nail down where I am going wrong. Here is my code I am using to test this.
First/Main:
Java Code:
package main; import javax.swing.SwingUtilities; public class Main { public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable(){
[Code] ......
When I drag the JPanels it just copies and makes a new one. I tested this by having a sysout send to the console a private int that I set during the initial creation of the object.
How to calculate an outcome/number through a combination of 4 drop down menus (drop down menu's 1 and 2 combine to form a specific value and menu's 3 and 4 combine to form a specific value), example ;
1st drop down menu (1*) = a,b,c,d,e 2nd drop down menu (2*) = 5,4,3,2,1 3rd drop down menu (3*)= a,b,c,d,e 4th drop down menu (4*)= 5,4,3,2,1
Example of drop down menu layout - [URL] ....
a->e = low to high (value) predominant value so b5>a1 ; d5>c1 5->1 = low to high (value)
Then the calculation involves the 1st and 2nd menu to form 1 value, so c3, e4 etc and the 3rd and 4th menu unite to form 1 value that is different from the first; c2, e3
So (1*2*) b3 ; (3*4*) b1 = x value
Also the value from 1*2* menu must be lower than value from menu 3*4*; so you cannot input 1*2* c4 ; 3*4* c5 /or b1 (so once the first menu is selected, the 3rd and 4th menu's wont show anything lower)...
