Roulette Wheel Selection In Genetic Algorithm
Feb 7, 2014I want java coding for roulette wheel selection in genetic algorithm with some explanation. I can't understand the algorithm clearly to implement in my project ...
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Roulette Wheel Not Working Completely
May 7, 2014package roulette;
import java.util.*;
public class Roulette {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
[Code] ....
This is were its going wrong if i just do a straight "spin" it works but when i try and add additional bets into an array for future comparrison it simply kicks out to my "do" statements says you have quit and acts like i simply hit spin.
How To Create Genetic Algorithm
May 23, 2015how to create a genetic algorithm.I made this class that Is supposed to Generate the chromes or Possible solutions of the program. Im pretty sure It doesn't have any syntax error and I went over the logic a couple time yet Im getting a NumberFormatException Exception Error. What this error means nor why am I getting it. Here's my code:
/* Contains the genes or possible solutions to the problem
*/
public class Genes
{
/* Each element is a binary number that corresponds to index number they have been assigned to, these are the possible genes
* The last 4 elements in the array represent + - * / correspondingly
*/
private String[] encodedNumbers = {"0000", "0001", "0010", "0011","0100", "0101", "0110","0111","1000","1001","1010","1011","1100","1101"};
[code]...
Genetic Algorithm Programming
Oct 13, 2014I am looking to program a simple genetic algorithm in Java but where to start.
" In a computer language of your choice, implement a simple genetic algorithm (GA). That is, write code for a generational GA which uses a binary encoding, tournament selection, single-point crossover and bit-wise mutation" ....
Using Multiple Arrays To Play A Roulette Game
Mar 20, 2015I am creating a roulette program that I converted from C++ to Java. Why its not finding the main class. Therefore it will not compile. Heres the code:
import java.util.Scanner;
public class P1RouletteDB
{
// This program demonstrates the use use multiple arrays to play a roulette game.
//Also a random number will generated to be used as the ball in the game. The user will be provided the random number to test the win algorithms
// Program Set 2 Roulette Game
// Global constants
public static final int COLS = 3; // Number of columns in each array
[Code] ....
Wheel Of Fortune - Guess Letters That Are Hidden In Characters
Jan 27, 2015We have to make a wheel of fortune game. Once the above information has been taken, the game can commence. The board should look very similar to the example below if the above input was used. In order to get text to align correctly, use the System.out.format(…) method. It's 14 by 4, so would I use a 2D array? I think I can get the rest done by myself but it's the making of the board I'm having trouble with. Would I need to use a 2D array?
The board is supposed to look something like this to the viewer of the program, but they need to guess the letters that are hidden in the characters. :
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
These are the hidden values the viewer cannot see and must guess. Therefore, each turn they will guess a letter and the letter will the revealed if the one they said happens to be in the phrase. They will have to get STAR WARS EPISODE IV"
* S T A R * * * W A R S * *
* * E P I S O D E * I V * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
And the concealed letters; are Star Wars episode five a new hope. The # would mean where letters stand. So there first # would be S, the next would be T - and it would eventually spell out STAR WARS EPISODE IV.
So this is the board that's used to display the concealed letter, and there a list of the hidden letters below, like hangman.
import java.util.Scanner;
public class wheelof{
public static Scanner keyboard = new Scanner(System.in);
public static String puzzle1 = "";
public static String puzzle2 = "";
public static String puzzle3 = "";
public static String bonpuzzle = "";
public static String category1 = "";
public static String category2 = "";
[Code] ....
Swing/AWT/SWT :: Scrolled Composite Doesn't Scroll By Mouse Wheel
Sep 7, 2014Mouse wheel is working properly on macosx but not working on windows.
Here is my layout structure, i implemented mousewheel listener but its not triggering tho.
And my scrolledcomposite declaration:
final ScrolledComposite scrolledComposite = new ScrolledComposite(mainComposite, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
scrolledComposite.setExpandHorizontal(true);
scrolledComposite.setExpandVertical(true);
scrolledComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_MAGENTA));
final Composite listComposite = new Composite(scrolledComposite, SWT.NONE);
GridLayout layout = new GridLayout();
[Code] ...
Recursive Selection Sort
Oct 21, 2014How would I modify this version of a selection sort into a recursive method?
public static void selectionSortRecursive(Comparable [] list, int n)
{
int min;
Comparable temp;
[code]....
Using Multiple Selection Choices?
May 28, 2014This program allows the user to select one of each different type of skateboard/accessories items. Then it allows the user to select as many misc items as he or she chooses. The program works fine for the single choices, but I cannot solve the latter part. I have a get method in the misc class that is trying to pull out any selection or selections that were made by the user, but it simply does nothing...
Here's my program, I have four panel classes for each skateboard type, and then I have one class that takes care of adding each panel to the content pane, and calculating the total cost of the item.
Decks Panel Class:
import java.awt.event.*;
import javax.swing.*;
// The DecksPanel class allows the user to selects a specific type of skateboard
public class DecksPanel extends JPanel
[Code]....
Selection Sort Method?
Mar 5, 2014I'm trying to make a selection sort method that will sort a list of Strings alphabetically.
I have a test list of Strings like so:
Joe, Steve, Oscar, Drew, Evan, Brian, Ryan, Adam, Zachary, Jane, Doe, Susan, Fred, Billy-Bob, Cindy, Mildred, Joseph, Hammer, Hank, Dennis, Barbara
However, whenever I run the method, the element that should go last, Zachary, in this case, ends up getting moved to the front for some reason. I'm not sure why.
I tried changing what the first element was initialized to, to the variable i as that would logically work as well, but it ends up missing the first element in the list.
Java Code:
public static void selectionStringAscendingSort (String[] words){
int i, j, first;
String temp;
for ( i = 1; i < words.length; i++ ) {
first = 0; //initialize to subscript of first element
for(j = i; j < words.length; j ++){ //locate smallest element between positions 1 and i.
if( words[ j ].compareTo(words[ first ]) <0 )
first = j;
}
temp = words[ first ]; //swap smallest found with element in position i.
words[ first ] = words[ i ];
words[ i ] = temp;
System.out.println(Arrays.toString(words));
}
System.out.println(Arrays.toString(words));
} mh_sh_highlight_all('java');
Selection Does Not Contain A Main Type
Mar 23, 2014I'm trying to run a simple code which is to just print out "Hello World", but whenever I run it, a message appears that reads: "Select a way to run Project_1(Which is the Java Project)"
The selections for it are: Java Applet and Java Application.Whenever I click Java Applet it reads: Selection does not contain an applet.When I click Java Application: Selection does not contain a main type.Here is the code which I believe is correct:
package packag_1;
public class Num_1 {
public static void main(String args){
System.out.println("Hello World");
}
}
Design Pattern Selection
Mar 27, 2015I need selecting which design pattern to use in my case.
I am creating a list of objects "items" to be presented in a list for the user to choose from, all objects have a title and a check box. Some objects have additional textbox for user input, some objects have additional image for illustration, and some objects have additional textbox and image as well.
I read and saw online videos but not sure if my selection "Factory Design Pattern" is the best match.
Applets :: 2 Jlists / Second One Depends On Selection In First One?
Jun 2, 2014So I have an applet and in the first ScrollPane you have a number of options of businesses
The Centre
IMAX
etc ..
and when you click one , the other scrollpane shows office
so when i choose "The Centre" for example , in the right scrollpane it shows : "Head Str." "Downtown" etc
i can fill in the first scrollpane with:
void myInit() {
DefaultListModel model = (DefaultListModel)businessList.getModel();
model.removeAllElements();
try {
ArrayList<Business> bussinesses = contr.getBusiness();
[code]....
but this gives me a NullPointerException on
ArrayList<Office> offices= business.getOffices(name);
which i don't understand, since business isn't null .. it's the selected value.
Graphically Displaying Selection Sort
May 20, 2014I am trying to write a program that graphically displays a selection sort. It needs to sort bars of various heights, and the bars heights are generated from an array of random integers. The program needs to show the bars swapping as they are being sorted, I am having trouble getting the bars to draw, it needs to look like a bar graph. Here is my code thus far (not counting my boiler plate):
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.Timer;
import java.awt.*;
import java.util.Random;
public class SelectionSortPanel extends JPanel
[Code] ....
Also right now it is giving an error from the compareTo method?
How To Do Selection Sort Of ArrayList By Customer Last Name
Nov 8, 2014I have an arrayList with these values:
Mike Smith with a customer id of 100 has an account number of 1000 and a balance of $5,000.00
Hank Jones with a customer id of 101 has an account number of 1001 and a balance of $45,000.00
Sam Overstreet with a customer id of 102 has an account number of 1002 and a balance of $45,000.00
Hank Jones with a customer id of 101 has an account number of 1003 and a balance of $48,000.00
and so on .....
I am trying to do a selection sort by the account holders last name. I understand how to do if the Arraylist holds integers, but my arraylist holds multiple fields. I am not allowed to use collections as this is a homework assignment.
here is the Account Class
public class Account implements Comparable<Account> {
private int acctNum;
private double balance;
private Customer cust; // note we are putting a Customer object in the Account clas
private static int nextAcct = 1000;// used to keep track of the next available account number
[Code] ....
Graphic Array Selection Sort?
May 21, 2014This is a lab for one of my CS classes, and the assignment is to create a randomly filled array (values 10-100) and use these values as the height of an array of rectangles (essentially a bar graph)that will be drawn on a page. After that's done, the code should use the selection sort method to sort the bars least to greatest, being repainted as it's sorted.
I'm receiving no errors, the original draws just fine, and the code sorts the first position and then...it just hangs. Like it's in an infinite loop but I have all of the modifiers in place (I think. I've been staring at this code for three days straight and I don't think I really see it anymore). I've tried talking to my professor and I get that her private life is really busy right now, but she just keeps blowing me off and I don't know what to do. Anyway, done with back story and whining so here's the code.
Rectangle class:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Rectangle
[code]....
Text Adventure - Cannot Use Menu Selection
Apr 30, 2015I cannot use menu selection 4 5 6 7 8 9 10 ... Why NO_EXIT has been declared and used in defining the contents of the map array, rather than just directly using the value 99999 in the map array definition
I don't understand map[][], objectName[] and objectLocation[]
package Assignment;
import java.util.Scanner;
public class GameWorld
{
// the map array holds details on which paths lead to which other rooms. NO_EXIT indicates no valid exit.
// each element holds the details of all paths leading out from a single-room in the order n ,e, s, w, ne, se, sw, nw
private final int NO_EXIT = 99999; // indicates that there is no exit in that direction
private int map[][] ={{NO_EXIT,NO_EXIT,NO_EXIT,1},{2,0,NO_EXIT,NO_EXIT},{NO_EXIT,3,1,NO_EXIT},{NO_EXIT,NO_EXIT,NO_EXIT,2}};
[Code] .....
Used Selection Sort Method On Array
Nov 11, 2014I have a question about selection sort. If I had an array of numbers, 1 2 3 4 100 0, and used the selection sort method (below) on the array,would the 0 slowly work it's way down to the end?
Nest loop = full rotation of nest loop
Nest loop 1: 1 2 3 4 100 0
Nest loop 2: 1 2 3 4 100 0
Nest loop 3: 1 2 3 4 100 0
Nest loop 4: 1 2 3 4 100 0
Nest loop 5: 1 2 3 4 0 100
Nest loop 6: 1 2 3 0 4 100
etc.
METHOD:
static void selectionSort(int[] arr){
int n = arr.length;
for(int i = 0;i<n;i++){
int min = i;
for(int j = i+1;j<n;j++){
if(arr[j]<arr[min]){
min = j;
}
}
int temp = arr[i];
arr[i] = arr[min];
arr[min] = temp;
}
}
How To Make Green Selection Box To Move Around
Feb 16, 2014I'm making a simple game where there's a 10x10 grid and you can move around a selection box and you can move around. I've been trying to make the green selection box to move around but it won't move! I only have right movement in the code but it won't work so far. Here are the classes that have to do greatly with each other.
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.image.BufferStrategy;
import java.util.Random;
public class Game extends Canvas implements Runnable{
private static final long serialVersionUID = 1L;
[Code] ....
I also tried an approach where you click with the move and it snaps to a tile grid but that didn't work either.
JavaFX 2.0 :: Turn Off ListView Selection
Jul 21, 2014I have a ListView with ListCells that are complicated things containing other nodes. I want to turn of ListView selection behavior (so not allow selections) without turning of events to the ListCell nodes in the ListView.
View Replies View RelatedJavaFX 2.0 :: How To Inhibit Changing Selection
May 25, 2014I have a Master/Detail application with a TreeView as Master Selection. I need to inhibit leaving a page if the contents are "invalid". How can I do that?
I tried to force the page again in a ChangeListener, but that doesn't work well, not even using Platform.runlater().
What's the "Best Practice" in this case?
Swing/AWT/SWT :: How To Access Elements Of TreeViewer Selection
Dec 27, 2014I have a hierarchical data structure (Machine, Component, Measurement, Fault are classes) displayed in a TreeViewer. I have added SelectionChanged and DoubleClick listeners, but can't find a way to get to the data stored in the selected instance of the data structure class. For example, the selection is a Measurement which has a String name field. I can see the data in the Element in Debug-Variables, but I can't find any getters to access it. I tried casting the selection as a Measurement but it is an ISelection, or TreeSelection class and it won't accept the cast.
It seems there should be get methods to access the data in the selection, but there aren't, so I'm must be missing something fundamental.
JSF :: Selection Of 0 Index Of Dropdown Chrome Browser
Jul 17, 2014I have a jsf form which has a drop down. When I select any value in drop down it shows related details. When I use chrome browser, and I press back space key it comes back to the page, it keeps the value selected which was selected earlier, but in the firefox, IE it keeps the zero index selected. The same code is not working for chrome browser.
I would like the zero index to be selected in the drop down in previous page in chrome browser also when back space key is pressed...
Selection Sort / Binary Search And Recursion
Nov 26, 2014Here is the code I have at the moment:
/**
* Use selection sort to sort the tracks by name. Return a new, sorted ArrayList of tracks.
*
* @return an ArrayList containing the tracks sorted by name, or null if no tracks exist
*/
public ArrayList<Track> getTracksSortedByName() {
// YOUR CODE HERE
if(tracks == null)
return tracks;
[Code] ....
Here are my 2 issues (there are 2 lines with compiler errors): I feel like I understand selection sort and binary search, but am not sure how to apply it to the more abstract idea of a Track ArrayList (hence the 2 compiler errors). What should I use to make it work. Lastly, I'm very uncomfortable with recursion, so my guess is there is also probably some logical issue with it in the getTracksSortedByName method.
JSP :: How To Display Only Text File In Selection Window
Apr 7, 2014I am trying to upload the text file in specific location in my disk but when I open selection window it displays all type of files while it should display the files only having .txt extensions
I am writing the code below,
<%@page import="org.apache.commons.fileupload.*,java.util.*,java.io.*"%>
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>
<%
// JSP to handle uploading
// Create a new file upload handler
[code]....
JSF :: Relational Database Working With Selection Dropdowns
Jun 23, 2014I'm and having troubling figuring out how to work some JSF magic on a Relationship that I crated on my database. Here is what I have coded.
My stateless Bean
//..
public void setmoney(Money money)}
em.presist(money);
//..
}
My JSF bean process (moneyJSF.java)
//..
public void addMoney(){
money_bean.setMoney(money_entity);
//..
}
[Code] .....
NOTE: typeJSF in the HTML code just grabs the data from the database in the table called typesOf. Money and types have a many to one relationship.
When I submit the selections, I get the following error:
Conversion Error setting value 'com.serveftp.wigm.entities.Types[ typeOfID=1 ]' for 'null Converter'
I understand that I need to convert from a string object to a Types object using the types entity, however I am not sure where to start on this one.