Which Axis To Increment / Decrement With Inclusion Of Speed Variable

Jan 30, 2015

if I move object A to one area of the screen I want object B to to move to object A's location but I also want object B to move at a fixed speed (movement variable). How do I go about doing this? Both the x and y coordinates of object B would need to know the coordinates of object A to calculate the distance between the two and to determine how much of which axis to increment/decrement (if that makes sense?) with the inclusion of the speed variable.In other words I'm just trying to create a homing object.

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Calculate Distance Between Two Coordinates And Determine How Much Of Which Axis To Increment / Decrement

Feb 1, 2015

Basically I'm looking for a way to make one object follow another. For example, if I move object A to one area of the screen I want object B to to move to object A's location but I also want object B to move at a fixed speed (movement variable). How do I go about doing this?

Both the x and y coordinates of object B would need to know the coordinates of object A to calculate the distance between the two and to determine how much of which axis to increment/decrement (if that makes sense?) with the inclusion of the speed variable. In other words I'm just trying to create a homing object.

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Increment / Decrement Buttons

Nov 17, 2014

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

import javax.swing.*;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.*;
public class IncrementDecrementPanel extends JPanel {

[Code] ....

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JSP :: Increment Variable From JavaScript - Function Is Undefined

Nov 13, 2014

I've a simple logic Code to increment a variable from javascript and Send it back to jsp. I just writing simple code to explain the logic. My code will have scritplets. I know usage of scriptlets is inside jsp is oldest but for the sake of logic.


<%
int i=0;
<input type="button" onclick="fun()"/>
%>

<script>
function fun(){
<%i++;5>
}
</script>

But My value of i is not incrementing its showing that function is undefined

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Increment Variable Each Time It Goes Through For Enhanced Loop

May 28, 2014

I am trying to increment a variable named counterVariable each time it goes through a for enhanced loop. It is stuck on 0.

Java Code:

valuesProcessor:
for(String[] row : values) {
for(String col : row) {
int counterVariable = 0;
if(col == null)
break valuesProcessor;

[Code] .....

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Print Table (array) Where Have X Axis And Y Axis?

Apr 12, 2015

I want to print a table (array) where I have an X axis and a Y axis. 16x11. My code is as follows:

int Windchill [] [] = new int [16][11];
{
{60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 0, -5, -10, -15} //X
{0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50} //Y
};

The code doesn't work even though it's similar to

int Windchill [][] =
{
{60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 0, -5, -10, -15}, //X
{0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50}, //Y
};

if I remember correctly, the 2 are correct just written in different ways.

and I want it to print like this

{60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 0, -5, -10, -15},
{ 0, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
5, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
10, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
15, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
20, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
25, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
30, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
35, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
40, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
45, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,
50, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0,}

where 0 is null (for now). I want to fill those in with a formula later, but I don't hardcoding them one by one is the most "efficient" way to do it

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Speed Of Sound Program

Feb 11, 2015

I have to write a program that asks the user to enter "air", "water", or "steel", and the distance that a sound wave will travel in the medium. The program should then display the amount of time it will take. The amount of time it takes sound to travel in air can be calculated as follows;

Time = Distance/1,100

The amount of time it takes sound to travel in water can be calculated with the following formula:

Time=Distance/4,900

The amount of time it takes sound to travel in steel can be calculated with the following formula:

Time=Distance/16400

Here is my code:

import java.lang.String;
/**
This program displays numbers padded with leading zeros.
*/

public class SpeedofSound {
public static void main(String[] args) {
double D; // declares this as double
D = keyboard.nextDouble();
const double A = 1100; // declares this as a constant

[Code] .....

The following is the error I'm getting:

----jGRASP exec: javac SpeedofSound.Java
error: Class names, 'SpeedofSound.Java', are only accepted if annotation processing is explicitly requested
1 error
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.

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Speed Of Sound Java

Jul 27, 2014

I can't get the output to read correctly. I get 0 as the answer.

import java.util.Scanner;
public class TheSpeedofSound777
{

public static void main(String[] args)
{

System.out.println("Gordon Elam Sr July 26, 2014 ");

[code]...

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Speed Ticket Program

Jan 5, 2015

public class TextLab03st
{
public static void main(String args[])
{
System.out.println("Text Lab 03");
System.out.println();
System.out.print("What is the posted speed limit? --> ");
int speedLimit = Expo.enterString();
System.out.println("");
System.out.print("How fast was the car travelling in mph? --> ");
int trueSpeed = Expo.enterString();
int ticketPrice;

[code]...

I tried everything and there's supposedly one error saying it reached the end of the file while parsing. I'm trying to make a speeding ticket program for my class.

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Feb 25, 2014

Two machines are connected in a LAN & Sharing Files in between them.

Everything is Working Fine but now i want to calculate the Copying Speed/data transfer Speed between them.

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Swing/AWT/SWT :: Calculating Time And Speed In Java GUI

Sep 27, 2014

So i'm using Netbeans and have created this template for the program i want to create. Basically what I want to do is enter a time and date in 24hr format including seconds and the date of start and end time and have the program calculate the time difference between Tool launch and tool Receive that takes into factor the Launch and Receive Dates for a total of hh:mm:ss duration. I don't know how to combine both those factors output one number in a total number of hours Duration. I'm also having problems linking the ODO (odometer) which the formula would basically be time/ODO (or distance in feet) = x.x ft/sec format.

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates and open the template in the editor.
*/

public class NewJFrame extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();

[Code] .....

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Measure Current Download Speed Of File?

Jan 5, 2014

Is there a way to measure current download speed of a file being downloaded? I've searched all over google and the only thing i get is average download speed. This is basically how it is being done, the result is average download speed.

Java Code:

OutputStream out = null;
URLConnection conn;
InputStream in = null;
long startup = System.currentTimeMillis();
try {
URL url = new URL(adress);
out = new BufferedOutputStream(

[Code] .....

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Moving Object In Y Axis

Jul 10, 2014

I just have one problem with a "car" program in java. The objective is to move the car in the direction it is facing. Moving forward in the normal position (when the angle is zero) means moving in the x-axis. Choosing to turn the car function (for example: 90 ) and then using the forward function should move up or down the car in the y-axis. However the y-axis is not working.

Car2 Demo.rar
JPGMoveforwardfunction.jpg

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How To Make Pong Ball Slowly Increase Speed

Apr 11, 2013

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 {

[Code] .....

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Add Color To Ball In Pong - Speed Up When Contact Made With Paddle

Apr 23, 2014

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.

Java Code:

package pong;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.event.ActionEvent;

[Code] .....

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Pong Game - Y Axis Collision Detection

Jan 28, 2014

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:

Java Code:

if((BALL.getX() >= LEFT_BAT.getX() && BALL.getX() <= LEFT_BAT.getX() + LEFT_BAT.getWidth()
&& BALL.getY() >= LEFT_BAT.getY() && BALL.getY() <= LEFT_BAT.getY() + LEFT_BAT.getHeight())
&& (BALL.getX() >= RIGHT_BAT.getX() && BALL.getX() <= RIGHT_BAT.getX() + RIGHT_BAT.getWidth()
&& BALL.getY() >= RIGHT_BAT.getY() && BALL.getY() <= RIGHT_BAT.getY() + RIGHT_BAT.getHeight())){
BALL.increaseDX();
BALL.setDX(-BALL.getDX());
} mh_sh_highlight_all('java');

It seems as though I would use the same code for checking the top or bottom.

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Mar 20, 2015

I'm struggling to change the colour of the X and Y axis. I can change the colour of the ticks and the tick labels in CSS... But not the axis themselves.

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Dec 14, 2014

I have a UI widget, like a table view for example, displaying real-time data. This table can be configured - so it has many properties. The way I would like to do so, is to have a small 'configure button', once clicked, would rotate the entire table along its y axis, and display another panel with checkboxes etc... So effectively, the hidden properties panel is revealed by rotation.

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May 29, 2014

I am using Java 2D API to implement Graph plotting. I am able to transform and scale the origin upright.

Now, I need to divide the x & y axes with frequencies (Ex: On Y-axis: 0 10 20 30 40 etc ..) and then plot points (Ex: [34, 54] etc) accordingly.

Which methods to use or way out to make this implementation?

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Feb 3, 2015

Currently, I am trying to create a program that draws a square anywhere in a 15x15 Quadrant I (Coordinate plane) grid. I am stuck on trying to get the axes displaying correctly. This is the code I have thus far:

import java.util.Scanner;
public class Question2square {
public static void main(String[] args) {
// Axis variables
int yAxismin = 0;
int yAxismax = 15;

[Code] ....

Unfortunately, instead of drawing the 'L' shaped axes I desire, it displays an 'r' shape instead. I'm trying to figure out how to display the axis properly. I tried flipping the for loops but that didn't work. I don't see what else could be inhibiting this.

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Vector Math - Calculate Equation Of A Plane That Would Rely On All Axis

Jan 27, 2014

I am running into some trouble with Line-Plane intersection, my method works, provided I am perpendicular to the plane I want to intersect. This is caused be the plane equation (with my given x, y, and z coordinates, the equation is -Z - 1 = 0). So the equation is only relying on the Z value of anything inputted. Is there another way to calculate the equation of a plane that would rely on all axis? Here is my current code:

Java Code:

Vector3f A = new Vector3f(0, 0, -1);
Vector3f B = new Vector3f(0, 1, -1);
Vector3f C = new Vector3f(1, 1, -1);

Vector3f v1 = new Vector3f(B.x - A.x, B.y - A.y, B.z - A.z);
Vector3f v2 = new Vector3f(C.x - A.x, C.y - A.y, C.z - A.z);

float[] i = new float[]{v1.x, v2.x};
float[] j = new float[]{v1.y, v2.y};
float[] k = new float[]{v1.z, v2.z};

[Code] ....

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Jul 10, 2014

Currently I try to integrate a JavaFX BarChart into my existing Java application. Therefore I need a BufferedImage of my BarChart, so that I can render that snapshot on a Graphics instance.

I adapted the existing BarChartSample.java (Chart Sample | JavaFX Tutorials and Documentation) and removed all animations. The code itselfs works fine but I identified one problem -> my TickLabels are missing

The TickLabels are visible If I use JDK 1.7u51 but if I change to JDK 1.8u05.... than the stlye of my BarChart will be changed and my tick labels are not visible.

Did I missed something or is that a bug?

using JDK 1.7u51
[URL] .....

using JDK 1.8u05
[URL] .....

My adapted code is the following:

package barchartsample;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

[Code] .....

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Mar 22, 2015

I have a question related to the code below, that I do not understand. The aim is to count all files and subdirectories in an ArrayList full of files and subdirectories. So I have to count every file and every subdirectory.

The code concerning counting files is clear to me - every time d is of the type file I have to increment n by one. However I thought that I have to do the same thing in case d is a directory, so I would have written the same code for directories.

So what does "n += ((Directory) d).countAllFiles();" mean? In my understanding the method countAllFiles() is applied again on the object Directory ( as Directory is the class that contains this method), but how is n incremented by this? I thought n should be incremented by one as we did with files.

public int countAllFiles() {
int n = 0;
for(SystemFile d : content) {
if(d instanceof File) {
n++;

[Code] ....

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Jul 5, 2014

I'm attempting to increment the values by 1 in an array of objects but I'm not able to increment with the increment operator.

for(int i=1;i<a.length;i++){
a[i].getHour(); hour = hour++;
a[i].getMin(); miinute = minute++;
a[i].getSec(); sec = sec++;
}

It just loops the value of hour without incrementing.

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Mar 1, 2015

I'm trying to display an columns and rows. The first column has integers and the rest are doubles. The initial calculations are correct, but I cannot figure out how to total last column, which is interest paid, and then start the iteration over.

int paymentNumber;
//print out the colum labels
System.out.printf("%7s %9s %10s %8s %15s %n", "Payment", "Interest"
, "Principal", "Balance", "Interest Paid");
System.out.print(" "); //put three blank spaces first
//Test For Loop Output:
for ( paymentNumber = 1; paymentNumber <= period*12; paymentNumber++) {

[Code] .....

Here's the output: It displays the payment number correctly. Am I supposed to write a for loop for each column?

run:
Please enter the amount of the loan:
1000
Please enter the interest rate:
1
Please enter the loan period in years.
1
Your Monthly Payment is:$83.79

[Code] ....

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May 26, 2015

I have the following:

public class HistoricalMoment{

private String eventName;
private ClockDisplay timeOfEvent;
public static final int MIDNIGHT_HOUR = 00;
public static final int MINUTE_ZERO = 00;
}

How can I create a method called public void addMinuteToTimeOfEvent() which calls the timeOfEvent's increment() method to add one minute to the timeOfEvent?

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