Draw 3 Rectangles In Different Spots / Move Elements In Order So They Do Not Cross
Apr 9, 2014
I made a small aplication which draws 3 rectangles in different spots(0,0 , 50,50 , 100,100)
Am I used an KeyListener + ActionListener, to make them move in the let's call it box.
How can I do in order that those 3 elements do not cross, so you can always see them, they don't collapse into each other?
Java Code:
package matrixmoveelements;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
[Code] ......
View Replies
ADVERTISEMENT
Apr 7, 2014
I have a class that implements JComponent and draw a rectangle and if a key pressed(for example UP) I want to draw it up, and then when down key pressed to draw it down... But I want not only to disappear, but somehow to move, so the user can see the rectangle moving...
View Replies
View Related
Apr 7, 2014
How do u copy all the elements in an array eg A into another array eg B? This is the question:
An array A contains integers that first increase in value and then decrease in value,
For example, 17 24 31 39 44 49 36 29 20 18 13
It is unknown at which point the numbers start to decrease. Write efficient code to code to copy the numbers in A to another array B so that B is sorted in ascending order. Your code must take advantage of the way the numbers are arranged in A.
This is my program:
This is the error message:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at Quest30.CopyAndSortArray.main(CopyAndSortArray.jav a:16)
View Replies
View Related
Jun 13, 2014
How to input 10 integer elements in an array & sort them in desc. order using the bubble sort technique.
View Replies
View Related
Jul 4, 2014
I have never seen a class defined under another class ....
class pe{
static class pqsort implements Comparator<integer>
public into compare(Integer one,Integer two)
return two-one;
}
}
First I want to know how class pqsort is defined under class pe ....
And how the comparator used in this example is sorting elements in reverse order
View Replies
View Related
Feb 5, 2015
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class array
{
public static void main(String[] args)
[Code] ...
Is there a way to write this, where, alpha is one array.
Write a program that declares an array "alpha" of 50 elements of type "double". Initialize the array so that the first 25 elements are equal to the square of the index variable and the last 25 elements are equal to three times the index variable. Output the array so that 10 elements per line are printed.
If I have an array of 50 integers, can I break that to read in lines of 10?
View Replies
View Related
Mar 1, 2014
One of the random number generators in Java extract the higher-order bits of the random number in order to get a longer period.
I'm not sure if I understand how this is done. Suppose that the random number r = 0000 1100 1000 1101. If we extract the 16 most significant bits from r; is the new number r = 0000 1100 or r = 0000 1100 0000 0000?
View Replies
View Related
Jan 26, 2014
Any link to the accurate explanation of binary trees in java?
View Replies
View Related
Oct 27, 2014
the thing with this program is that instead of it having preset variables, I want to prompt the user to enter values of the two rectangles. I don't know how to use the scanner in this case, or even if I should use the scanner.
class MyRectangle2D {
//declare the variables
private double x, y;
private double width, height;
[code]...
View Replies
View Related
Oct 3, 2014
I need to create a diagonal cross however I can not figure out how to do the upper left side of it.
Currently I am getting
0*
1--*
2---*
3 *--*
4*-----*
I want to get it to look like
0*------*
1 *--*
2----*
3 *---*
4*------ *
( I replaced spaces with -) So far I have
System.out.println("Input a size(must be larger than 1: )");
size=input.nextInt();
if (size>1) {
for (x=0;x<size;x++){
System.out.println("");
[Code] ....
View Replies
View Related
Oct 2, 2014
My goal is to make 2 rectangles in the same window. so far I have this.
import javax.swing.JComponent;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
public class BoxComponent extends JComponent
[Code] ....
After running the program I get one rectangle, the red one. If I take the code out for the red rectangle, I only get 1 blue one. What am I missing?
View Replies
View Related
Oct 22, 2014
[URL] .... This is a link to the credentials that need to be met.
/* Constructors, getters and setters that will determine if the rectangles cover each other.*/
import java.util.Random;
import java.lang.Math.*;
class Rectangle{
int width = 50;
int length = 50;
int x = 90;
int y = 90;
[Code] ....
View Replies
View Related
Jan 12, 2015
I am trying to make a 2d array that keeps track of comparison counts. what I have so far works ok but writes over the previous elements with 0. can't seem to find where I am re-initializing the previous elements.
//this is one of my fill sort arrays
public void fillSelectionArray(int index, long countSum) {
//rand = new Random( );
//for ( int i = 0; i < listsize; i++) {
selectionList[ index -1] = countSum;
// }
[Code] ....
I know I am missing something just not sure what.
View Replies
View Related
Aug 13, 2014
I need fixing an issue in the search textbox in one of the jsp's. I was informed that cross site scripting can be done in the textbox and I kept the below code in my jsp to fix the issue:
Java Code:
searchTerm = request.getParameter("search");
searchTerm = searchTerm.replaceAll("<", "<").replaceAll(">", ">");
searchTerm = searchTerm.replaceAll("[^A-Za-z0-9 ]", "");
searchTerm = searchTerm.replaceAll("eval((.*))", "");
searchTerm = searchTerm.replaceAll("["'][s]*((?i)javascript):(.*)["']", """");
[Code] ....
Now, after applying the above code, the cross site scripting can be done and the problem is that the search can't be done using the textbox and all the time will display none results.
View Replies
View Related
Dec 8, 2014
The program I'm supposed to create generates a random number between one to ten. Then the program is to ask me if I wish to cross the road.
If you choose to cross, the outcomes for 0-2 are "You crossed safely."
For 3-5, 75% of the time it should say "RIP you got run over", and 35% of the time it should say "You crossed the street."
For 6-8, 60% of the time it should say you made it.", and 40% of the time it should say "You died". For 9-10, it should say "RIP".
So far I have gotten the random number generation part working,
import java.util.Random;
public class test4 {
public static void main(String[] args) {
Random random = new Random();
for(int i =0; i < 1; i++){
int num = random.nextInt(10) + 1;
System.out.println("The number of cars on the street are: " + num + "
Do you wish to cross the road?");
}
}
}
View Replies
View Related
Nov 13, 2014
The program is where you will click anywhere in the jframe and it will draw a new rectangle. I have altered the code given to us but the problem that I am having is the fact that when I click the rectangle will always be connected to the upper left hand part of the jframe, no matter where I click. The program should create rectangles of the same length and width wherever you click. Here is what I have. I believe I have to change something in the addRectangle method, but nothing that I have tried works.
Java Code:
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
import java.util.ArrayList;
public class RectangleComponent2 extends JComponent
[Code] .....
View Replies
View Related
Oct 30, 2014
I have to calculate auto and cross-correlation from a file, like this:
Rxx(n)= 1/N* SUM[from k=1 to N-n]((x(k)-x(mean))*x(k+n)-x(mean))
and after
Rxy(n)= 1/N* SUM[from k=1 to N-n]((x(k)-x(mean))*y(k+n)-y(mean))
I've 600 x an y,
k = the numbers of x (N is the last one)
n = 0....N-1
View Replies
View Related
Aug 13, 2014
fixing an issue in the search textbox in one of the jsp's. I was informed that cross site scripting can be done in the textbox and I kept the below code in my jsp to fix the issue:
searchTerm = request.getParameter("search");
searchTerm = searchTerm.replaceAll("<", "<").replaceAll(">", ">");
searchTerm = searchTerm.replaceAll("[^A-Za-z0-9 ]", "");
searchTerm = searchTerm.replaceAll("eval((.*))", "");
searchTerm = searchTerm.replaceAll("["'][s]*((?i)javascript):(.*)["']", """");
[code]...
Now, after applying the above code, the cross site scripting can be done and the problem is that the search can't be done using the textbox and all the time will display none results.
View Replies
View Related
Oct 26, 2014
I have to calculate auto and cross-correlation from a file, like this:
Rxx(n)= 1/N* SUM[from k=1 to N-n]((x(k)-x(mean))*x(k+n)-x(mean))
and after
Rxy(n)= 1/N* SUM[from k=1 to N-n]((x(k)-x(mean))*y(k+n)-y(mean))
I've 600 x an y,
k = the numbers of x (N is the last one)
n = 0....N-1
already calculated mean, and I've tried the following (but it doesnt work):
String sor;
int i=0;
while ((sor = br.readLine()) != null) {
String [] adatok =sor.trim().split(",");
[Code] ....
View Replies
View Related
May 19, 2014
I have already tried every possible way for removing this bug but all failed. The problem is that sometimes my player passes through the map tiles, i mean, the algorithm is like -- if not colliding, move in required direction; else if colliding, move in opposite direction. But sometimes the second condition fails i dont understand why.
private void movement(){
left=bindObject.getLeft();
right=bindObject.getRight();
up=bindObject.getUp();
down=bindObject.getDown();
bindObject.setColliding(colliding);
[Code] .....
Where bindObject is a class which contains key bindings of following keys:-
left arrow key (when pressed) , left arrow key (when released),
right arrow key (when pressed), right arrow key (when released),
up arrow key (when pressed), up arrow key (when released),
down arrow key (when pressed), down arrow key (when released)
View Replies
View Related
Jan 12, 2015
If some one add script in my URL, I want the script not pop up, we have tomcat 6 [URL] .....
View Replies
View Related
Apr 15, 2014
I'm not exactly sure what the draw button is supposed to do specifically, all i know is that it is supposed to draw both rectangles and ovals. The problem I am having is that when ever I click Draw Rectangle, it draws rectangles jusst the way I want but when ever I click Draw Oval, the program keeps drawing rectangles. I've tried repaint and clearRect methods but I did not manage to get them to work. I'm not sure what the problem is right here, I just cannot get it to work. Is there anything you guys can see that might be causing this? It's always good to have a different person look at it then myself. Also, I'm trying to implement a boolean for draw oval but I don't know where to put the if then.
public void init() {
length = new JTextField(10);
width = new JTextField(10);
btnDraw = new JButton("Draw");
btnClear = new JButton("Clear");
btnDrawRectangle = new JButton("Draw Rectangle");
btnDrawOval = new JButton("Draw Oval");
[Code] .....
View Replies
View Related
Jun 20, 2014
the prime numbers from 1 to 2500 can be obtained as follows. From a list of the numbers of 1 to 2500,cross out al multiples of 2 (but not 2 itself). Then, find the next number (n, say) that is not crossed out and cross out all multiples of n (but not including n).
Repeat this last step provided that n has not exceeded 50 (the square root of 2500). The numbers remaining in the list (except 1) are prime. Write a program which uses this method to print all primes from 1 to 2500. Store your output in a file called primes.out.
View Replies
View Related
Jan 13, 2014
I have a code to resize a single rectangle. I would like to display and resize multiple rectangles independently and according to my research on the net, the best way is to use an arraylist. So I modified the code in this sense, except ...when I run the code, the rectangles appear good but impossible to resize. I think the problem comes from mousePressed, Released, Dragged and Moved methods. When I use the mouse to resize the rectangle, nothing happens. The code does not interact with the arraylist, and therefore with rectangles it "contains". Resizing is my main class, the MouseAdapter is in the Resizer class (below).
Resizing component; boolean dragging = false; // Give user some leeway for selections.
final int PROX_DIST = 3; Path2D.Double selectedPath; public Resizer(Resizing rz) {
component = rz; component.addMouseListener(this);
component.addMouseMotionListener(this);
[Code] .....
View Replies
View Related
Oct 5, 2014
The following class is part of a homework assignment:
package event;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import model.Model;
import shapes.Rectangle;
import shapes.Shape;
[Code] .....
I have to implement the methods for what is happening if on some panel the action selected are Remove/Move/Change/Resize (Draw is already implemented).
The Applet in question draws ovals or rectangles on the screen and you can change the fill-color and outline-color of the shape. All this works already. I have dabbled with the move-method, but am not going anywhere.
View Replies
View Related
Jan 18, 2014
So the following is my code for the Terrian Generation of my game, however the way i have it rendering all the tile rectangles as opposed to just rendering whats visable on my JFrame causes lots of lag.
These are the variables and Rectangles inside _TerrianGen.class
//CHUNK
static int chunkx =2048;
static int chunky =2048;
//RECTANGLES
public static Rectangle[][] tile = new Rectangle[64][64];
static int[][] blockType = new int[64][64];
//0=Grass 1=Dirt 2=Stone 10=Brick 11=Coal 12=Iron 21=Gold 22=Diamond -1=null
This is the Init() code
for (int x =0; x < chunkx-32; x+=32){
for (int y=0; y < chunky-32; y+=32){
tile[y/32][x/32] = new Rectangle(x, y, 32, 32);
blockType[y/32][x/32] = -1;
[Code] ....
View Replies
View Related
