Finding Class In Java For Implementation Of Graph Theory?

Nov 15, 2014

I want to use graphs in java. Is there any class in java for implementation of graph theory? I most create a graph and run DFS(Depth First Search) algorithm on that.

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Why Class Implementation Is Not Possible In Java

May 14, 2014

Why Class implementation is not possible in java....

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Rough Set Theory In Java

Sep 26, 2014

I am currently doing my ME project in feature selection in data mining. My project title is "BINARY BAT ALGORITHM WITH RELATIVE REDUCT FOR UNSUPERVISED FEATURE SELECTION". I am doing the project in java language . I need to know that, whether we have any library for rough set theory(RST) in java. I know that in C we can use "rough.h" for RST but i need to code RST in java. Which library we can use for RST in java means.

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JavaFX 2.0 :: Dynamically Change CSS Class And Splash Screen Implementation

Jan 12, 2015

So it seems to reason that many JavaFX applications will want to dynamically change CSS styles.  Is the best way to do this via the <node>.getStyleClass().add("classname")?  The underlying data structure is an observable list.  So lets say one has 5 styles that simply change the fill color of a circle to 5 different colors respectively.  So if I have a condition in which I want to dynamically apply 1 of these 5 styles, the way I currently do this is by defining all 5 styles as strings in a list using a static initializer, then I call <node>.getStyleClass().removeAll(list), then getStyleClass().add("classname").  I do this to avoid adding the same style over and over and inflating the underlying list.  Is this the correct way to manage dynamic CSS styles?
 
So I know there is a few different way to implement a splash screen.  My app has definitely gotten larger over the last few months of development and I have noticed there is about a 5 second delay between when I run the application to when I see the main stage.  I was thinking a splash screen would be nice to fill this time period.  I have not had time to prototype using a Preloader and I fear that using an alternate, lightweight stage on startup would still take too long of a delay.  I was actually thinking that using the nice and simple JVM argument "-splash:<image name>" would be simple, easy and effective.  Unfortunately when I try to do this, the splash screen comes up but never goes away. 

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Java Graph - Cannot Find Symbols

Feb 27, 2015

I am taking an algorithm class and i am having some problems trying to get this program to work.The file name is Graph.java

package graphs;
import java.util.HashSet;
import java.util.ArrayList;
public abstract class Graph

[code]....

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Graph In Java - How To Draw Curve

Apr 8, 2014

If I have a function for example y=x^2

How can I draw the curve?

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Swing/AWT/SWT :: Graph Plotting In Java

May 22, 2014

What are the different options available to plot graphs in Java other than JFreechart API?

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JavaFX 2.0 :: Create Implementation Of Service Class That Runs On Particular Time Everyday

Jun 23, 2014

I tried using ScheduledService but  the delay and period fields accepts a Duration object. I want the Service to run at exactly 6.00 pm everyday.

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Binary Search Trees Theory - Sequence Of Keys?

Mar 15, 2014

Suppose that a certain BST has keys that are integers between 1 and 10, and we search for 5. Which sequence below cannot be the sequence of keys examined?

(a) 10,9,8,7,6,5
(b) 4,10, 8, 6, 5
(c)1,10,2,9,3,8,4,7,6,5
(d) 2,7,3,8,4,5
(e)1,2,10,4,8,5

I've noticed many differences, such as there is only one with an odd number of keys, and one has all integers from 1-10 inside of it, but I can't find any real reason that you wouldn't be able to search it?

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How To Write A Dot File That Prints Graph In Java

Dec 6, 2014

Let's say if I want to create a dot file that print this graph in Java, how do i go about it?

I'm starting with this:

PrintWriter writer = new PrintWriter("graph.dot");

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Finding Source Files In Other Directory With Class Path Option

Apr 23, 2015

I'm having another issue. I have 2 java source files(see below). They are place in the same directory. How do I compile them using classpath?

I have already tried 1st attempt :

javac -cp com.companyname.interview.DuplicateReplace.java DuplicateReplaceTest.java [did not work!]
2nd attempt: javac -cp DuplicateReplace.java DuplicateReplaceTest.java [again, did not work!]
package com.companyname.interview;
public class DuplicateReplace { /* code */}

[Code] ....

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FFT Convolution Implementation In Java

Dec 26, 2014

Not necessarily Java related, more a general programming issue I have come a long and I am currently using java to mock up a project that will eventually get moved over to C++.

I am trying to implement FFT Convolution into a java project and have things partially working, I do not know if it is a coding issue, logic issue or if I simply know nothing of FFT and convolution.

For starters I got an FFT library that I do have working, if I create a small array pass it into the forward FFT, do a little bit of bit manipulation (converting a complex array of size n*2 into a re[] and im[] of size n), run the inverse FFT and do the same bit manipulation again I get back where I started.

However if I take two arrays, a Dirac Delta function (an array with a 1 followed by zeros for the rest of the array) and a stepping kernel (ex. {1, 2, 3, 4 etc}), I would expect to get the forward FFT of both arrays, bit manipulation, multiply them together, Inverse FFT, and bit manipulate again and the result would be the kernel. I have not had such luck.

This is the gist of the program:

// bit manipulation, converts complex array to two re and im arrays
public void bitTwiddle(double [] real, double [] real2, double [] imaginary){

double [] realCopy = new double [] {0, 0, 0, 0, 0, 0, 0, 0};
double [] imaginaryCopy = new double [] {0, 0, 0, 0, 0, 0, 0, 0};

for (int idx = 0; idx < (N * 2); idx++){
realCopy[idx] = real [idx];

[Code] ....

This is the result:

Quote
=====================================================================
Dirac Delta In Time Domain:
Real:1.000.000.000.00
Imag:0.000.000.000.00
=====================================================================
Dirac Delta Frequency Domain
Real:0.500.500.500.50
Imag:0.000.000.000.00
=====================================================================
Kernel In Time Domain
Real:1.002.003.004.00
Imag:0.000.000.000.00
=====================================================================
Kernel In Frequency Domain
Real:5.00-1.00-1.00-1.00
Imag:0.00-1.000.001.00
=====================================================================
Result: Dirac Delta x Kernel
Real:2.50-0.50-0.50-0.50
Imag:0.00-0.000.000.00
=====================================================================
Result In Time Domain
Real:0.501.501.501.50
Imag:0.000.000.00-0.00

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Decision Table Implementation In Java?

Jan 8, 2015

how to start with decision table implementation in java

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Implementation Of Login Page With Java

Mar 25, 2014

Code for login page by java and how we can implement it.

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Implementation Of Stack Methods In Java

Jun 3, 2014

I have to implement all the stack methods in java such as push, pop empty, not using the ready methods but have to create them and to execute an exercise but is sth wrong with it

public class Stiva {
/** the problem is here how to declare the stack 1 and stack 2 and kreu(head) gjmax(size)*/
int Gjmax;
int array[] = new int[Gjmax];
int kreu;
private Stiva stiva1;
private Stiva stiva2;

[Code] .....

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Implementation Of All Stack Methods In Java

Jun 3, 2014

I have to implement all the stack methods in java such as push, pop empty, not using the ready methods but have to create them and to execute an exercise but something wrong with it....

public class Stiva {
/** the problem is here how to declare the stack 1 and stack 2 and kreu(head) gjmax(size)*/
int Gjmax;
int array[] = new int[Gjmax];
int kreu;
private Stiva stiva1;
private Stiva stiva2;

[Code] .....

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Non Local Means Filter Implementation In Java?

Feb 23, 2014

How to implement non local means filter in java?

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JavaFX :: Implementation Of Web Data Into Non-web Java Application

Aug 4, 2014

What would be the most effective method to display data grabbed from a web source that is queried every second, for example the most recent EUR/USD price?

I already have access to the data stream, and I've built a simple FXML in javaFX that contains a grid; I'm not sure how to approach putting the live ticking data into the grid so it continues to update as the price changes, for example.

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2048 Game Implementation In Java - Rectangle In GameBox

Apr 4, 2014

I want to implement the 2048 game in Java.

I made the game logics, but now I need to implement the interface.

I made 2 classes GameBox and ContainerBox that extends JComponent.

I painted in GameBox a rectangle and now I want to initialize a matrics of GameBoxes in ContainerBox so I used:

GameBox GB[][] = new GameBox[4][4];

I am thinking about drawing the Boxes in something like this:

for(int i=0;i<4;i++)

for(int j=0;j<4;j++)

but I don't know how to draw those rectangles in the for...

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Java Errors Finding Symbol?

Apr 7, 2014

Here is my code that is supposed to read a user-selected document, create text boxes from that info, and display them. (There is a lot of code in there that may not be relevent, but just ignore that.) When I compile, I receive errors that it can not find the symbols color, xIn, yIn, w, and h.

Here's my code:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
public class Ex22 extends Basic {

[Code] ....

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Applets :: Java Is Not Finding Image

Aug 23, 2014

I have been on java applets and it's been fun but I'm stucked with painting a ladybug image on applet using "getImage ( getCodeBase(), "Images/ ladybug.gif") to load the image. It runs but the appletviewer is blank. My applets are not embedded in the web. I just type the codes in eclipse and click the 'run' button.I think the problem is that java is not finding the image in the directory I specified. Please where am I supposed to save the ladybug image so that java can find it on my system whenever I supply the path.

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How To Plot Graph

Nov 13, 2014

I am new to java. I wana create a java program that can plot a graph for that I've already written this:

/ x axis would be the ,,elemszam" from 0 to 599;
y axis would be ,,resz_xy"
double sum_xy=0;
double g=10000.0;
double z_xy;
double xy=0;

[Code]...

--- Update ---

Actually i'm using netbeans...

--- Update ---

and the datas are coming from a text file...

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In And Out Degree Of A Graph

May 2, 2014

I have this code for reading a text file and printing out information about the graph, the program works perfectly but I need to figure out the in degree and out degree of the graph if it is an directed graph. So my question is how would I go about implementing that? I know what in degree and out degree does but in terms of the code I'm not so sure, so I'm thinking if the case of vertex 0,1 the first vertex comes before the second vertex so that would in an in degree right? But how would I do that?

graphs.txt
6,1
0,2 0,4 1,4 1,5 2,1 2,3 2,5 3,2 3,4 4,1 4,5 5,1 5,3 5,2

import java.io.File;
import java.util.Scanner;
 public class Vertices {
public static void main(String[] args) throws Exception {
@SuppressWarnings("resource")

[Code] ....

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Generate Bar Graph From Data

May 22, 2014

I need to generate a bar chart given the data that is in main. The relative performance of each sorting algorithm with respect to time, number of comparisons, and number of swaps for each data set (e.g., 50,000 –400,000 random integers). Each algorithm will have 5 bars corresponding to the 5 data sets. The height of these bars will depend on the performance of the algorithm for that data set.

I know how to write a bar with normal values like integers but for this I'm not sure because the values for instance comparisons and swaps are not given they are calculated. I just need to know what steps to go about doing that, you can even express them in pseudocode or even just explaining it I don't need the code, I think. Here is the main

public class Main {
public static void main(String[] args){
int t= 50000;
int t2=100000;
int t3=200000;
int t4=300000;
int t5=400000;

[Code] .....

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Adjacency List Graph

May 4, 2014

I'm trying to read a text file of a graph and print information about the graph including the order and size of the graph, rather it is a directed or undirected graph, if it is directed the in and out degree, and the and a list of all vertices for which it is adjacent. The problem is the adjacency list is just printing out the list of vertices instead of the adjacency list. Is there something in my code that is problematic? Also I'm unsure of how to go about the in and out degree

"graphs.txt"
6,1
0,2 0,4 1,4 1,5 2,1 2,3 2,5 3,2 3,4 4,1 4,5 5,1 5,3 5,2
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner; 
public class AdjList {
private Node first; // beginning of list

[Code

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Each Bar In Graph Will Represent Value Of Each Element Of Array

Nov 5, 2014

So I have an array which holds 19 elements, each element represents a value of 'income'. I'm trying to code the graph so that each bar will represent the value of each element of the array (income). I have been given the code ' for (int Bar = 0; Bar < array of values.length; bar++);' however i'm unsure if this is how to do it, or what to add to this code to make it work.

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