I am in search of a library that has been created in JAVA that can be utilized to solve for roots of a nonlinear system of equations. Each equation has 2 variables, x and y, and will need a library that uses higher calculus equations. No ones that just solve for x.
Most of the libraries that have been created to solve nonlinear equations are either in Fortran, C, or Python. There are a few libraries such minpack/scipy. The only libraries that I have been able to find or programming solutions that are in JAVA either require additional programs such as Matlab or are commercial products
I did find one library put together by a professor in Colorado State, but am unsure how to use it. There does not seem to be a way to enter your functions in the code.
Newton Raphson Method - Multivariable(x and y)
[URL] .....
How to use this library or find a library that can be used in an android application would be amazing.
I am in search of a library that has been created in JAVA that can be utilized to solve for roots of a nonlinear system of equations. Each equation has 2 variables, x and y, and will need a library that uses higher calculus equations. No ones that just solve for x.
Most of the libraries that have been created to solve nonlinear equations are either in Fortran, C, or Python. There are a few libraries such minpack/scipy. The only libraries that I have been able to find or programming solutions that are in JAVA either require additional programs such as Matlab or are commercial products
I did find one library, but am unsure how to use it. There does not seem to be a way to enter your functions in the code.
Newton Raphson Method - Multivariable(x and y) www(.)math.colostate(.edu)/~benoi...s/solvers.html
How to use this library or find a library that can be used in an android application.
I am in search of a library that has been created in JAVA that can be utilized to solve for roots of a nonlinear system of equations. Each equation has 2 variables, x and y, and will need a library that uses higher calculus equations. No ones that just solve for x.
Most of the libraries that have been created to solve nonlinear equations are either in Fortran, C, or Python. There are a few libraries such minpack/scipy. The only libraries that I have been able to find or programming solutions that are in JAVA either require additional programs such as Matlab or are commercial products
I did find one library put together by a professor in Colorado State, but am unsure how to use it. There does not seem to be a way to enter your functions in the code.
Newton Raphson Method - Multivariable(x and y) Page Not Found
How to use this library or find a library that can be used in an android application would be amazing.
So i was assigned to write a program that would print the answer to the system of two linear equation. the form of ax+by=c and dx+ey=f..I wrote this program, but it is incorrect since I tried it out on my terminal and I keep getting incorrect values.
import java.util.Scanner; public class Quest4 { public static void main(String[] args) { Scanner input = new Scanner(System.in);
This was the way I was supposed to write it (every thing separated). Any way, I was wondering why when ever I try to run I only get NaN for roots, and my discriminant is off
/** * Find roots of quadratic equations */ import java.util.Scanner; public class QuadraticProject { public static void main(String[] args) {
I just created a program to calculate the roots for a 2. degree equation, When I first created my program, I defined the r1 and r2 as double, but got an error saying they needed to be defined as String, why is that?When should I be using string? I am new to java and I have mostly only used int, double and Boolean so far.
import java.util.Scanner; import java.text.DecimalFormat; public class c3e1 { public static void main(String[]args){
Design a class named LinearEquation for a 2 X 2 system of linear equations:
ax + by = e cx + dy = f Where x = ed − bf/ad − bc y = af − ec/ad − bc
The class contains:
- Private data fields a, b, c, d, e, and f. - A constructor with the arguments for a, b, c, d, e, and f. - Six get methods for a, b, c, d, e, and f. - A method named isSolvable() that returns true if ad−bc is not 0. - Methods getX() and getY() that return the solution for the equation.
[code].....
how to display the information I need to display. Also I am not so sure that I wrote the code properly, I do not get any errors when I compile it.
I am suppose to write a method for solving a quadratic equation using the following header:
public static int solveQuadratic(double[] eqn, double[] roots)
I have entered 1, -3 and -4. The answer I get is "The solution is:0.0" .
import java.util.Scanner; public class QuadratilEq { public static void main(String[] args) { // TODO Auto-generated method stub Scanner input = new Scanner (System.in); double[] eqn = new double[3]; double[] roots = new double[4];
I have a .txt file which i am currently using Scanner to input into the console, the text file contains the names of football games followed by their scores:
E.g. Man U : Liverpool : 2 : 1
I need to create an equation to add together all scores to create a string reading something like "total goals: 28" ....
So I need to create a square and make it rotate when the letter R is pressed and then make it stop when the letter R is pressed again. I need make it rotate using a maths equation that I can't figure it out myself right this moment.
Code for square:
package lab2; public class Square { public double [][] vertices = new double[4][2]; //not good to make this public public Square(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) { vertices[0][0]=x1; vertices[0][1]=y1; vertices[1][0]=x2;
[Code] ....
In the Square code there is a method to write an equation to rotate it but I can't figure that part out ....
There are a lot of variables in physics and it is easy to manipulate equations to find the unknown variable. Well, in my program I have the problem of determining which equation to solve for an unknown. You can see I have a timeF, timeI, time, distanceI, distanceF, distance...etc...variables. The way that I have written the code, it will scan for an empty() JTF and assign it as the unknown variable (not sure I can do it this way anymore). At that point, the value is passed into the correct calculation method to process the equation based on a series of case statements in each method...
I know the button arrays I have set up will process correctly in the checkJTF method...and I will need to account for that...but right now my focus is on getting the program to properly calculate the kinematics equations and display the result in the JPanel.
public class PhysicsFrame extends JFrame { //Kinematic variables private static float distanceI, distanceF, velocityI, velocityF, velocityAverage, acceleration, time, timeF, timeI, result; //Power variables
I have the Java Development Kit downloaded in my C file and my book tells me to compile the program I need to open command windowand change the directory where the program is stored. I tried the command cd to change directory and received this message "The system cannot find the path specified."
I checked the Environment Variables on Windows 7 and the Path says: C:Program Files (x86)Javajre1.8.0_31in
This is after many tries and i still can't change directory and i keep getting the same message.
I'm making a stock system for the heck of it,so everything was going great until I hit the loop I am trying to use a for loop to add stock to the stock system,any way the question is maily about loops.How come I cannot declare a variable outside a loop and assign a value to it,for example I can declare as follows and I will not get an error,
but in my code(and yes its the only error I get I tested it) I get an error and can only declare and assign a value inside the loop,the reason for this is because I wanted to get the value from another class and use it in the loop ok so heres the code from both classes.
public class mainn{
public static void main(String [] args){ stock first = new stock(); int internal; internal = first.wanted;
it gives me an error at the end class part some syntax error insert "}"..
* Course: IT110 - Introduction to Programming * Filename: MyCustomShirtsPhase1.java * * Purpose: Created a simple online ordering system for My Custom Shirts customers */ import javax.swing.JOptionPane;
I have the Java Development Kit downloaded in my C file and my book tells me to compile the program I need to open command windowand change the directory where the program is stored. I tried the command cd to change directory and received this message "The system cannot find the path specified." I checked the Environment Variables on Windows 7 and the Path says: C:Program Files (x86)Javajre1.8.0_31in
This is after many tries and i still can't change directory and i keep getting the same message.The book I am using to learn Java is "Java How to Program: Tenth Edition" from Paul and Harvey Deitel.
I'm assigned along with two others to make this program for a project.
We need to store data to the program by adding them such as user_id among the 5 criterias that are needed. Lets say I want a new user, I need the program to give me that option and then I would type in the user id and the program would store that data information
As far as I'm aware, boolean, screentokenizer and scanner is involved in the making of this program.
In my java program I'm changing my IP(using proxy) and sending the request to some sites. Later some point of time, I want to know my current IP address through java program itself. How to get hold of my current IP address? Also which IP address will it show? The proxy one or the original IP ?
I have designed a code that is aimed at simulating a banking environment using access database. However, there are errors and i am not able to create a new account.
import java.awt.*; import java.awt.event.*; import java.awt.FlowLayout; import java.sql.*; import javax.swing.*; public class Bank extends JFrame implements ActionListener
I just want to calculate search time for my algorithm . How to get system time in java other than System.nanotime() and System.currenttimemillis() as these methods does not returns consistent time for same input is their another option to get system time???
This program requires knowledge of manipulation of Java String objects and methods. It also requires knowledge of Number System Conversions.
// Lab16MATH05st.java // The Number System Converter // This is the student, starting version of the Lab16MATH05 assignment.
import java.util.Scanner; public class Lab16MATH05st { public static void main (String args[]) { System.out.println("Lab16MATH05 - Number Conversion Program
[code]....
90-Point Version Specifics: The 90-point version requires that you write both the fromHexToBin and fromBinToDec methods.
90-Point Version Output
95-Point Version Specifics {The 95-point version requires everything from the 90-point version and adds the fromBinToHex method. For this version, you may assume that the binary number will have a multiple of 4 bits.
95-Point Version Output
100-Point Version Specifics: The 100-point version requires the same methods as the 95-point version; however, the fromBinToHex method needs to be improved so it can convert regardless of the number of bits.
100-Point Version Output
105-Point Version Specifics: The 105-point version requires everything from the 100-point version and adds the fromDecToAny method. For this version, the method needs to be able to convert from decimal to any base between 2 and 10. Base 16 is not required for this version.
105-Point Version Output
110-Point Version Specifics: The 110-point version requires the same methods as the 105-point version; however, the fromDecToAny method needs to be improved so it can also convert to base-16.
I'm in the middle of building A time management system for myself.I'm currently using JodaTime for timing in java. I just can't figure out who to save my data like, the starttime, stoptime and day time.
public void save() throws SQLException { String checkSql = "select count(*) as count from Time where id=?"; PreparedStatement checkStmt = con.prepareStatement(checkSql); String insertSql = "insert into Time (id, day, starttime, stoptime, overtime, exception, hours) values (?, ?, ?, ?, ?, ?, ?)"; PreparedStatement insertStatement = con.prepareStatement(insertSql);
String updateSql = "update Time set day=?, starttime=?, stoptime=?, overtime=?, exception=?, hours=? where id=?"; PreparedStatement updateStatement = con.prepareStatement(updateSql);
I am going to try and write a server-client based system.The server will be the design of what I want (e.g: daily advertisements that will be displayed on big monitors connected to the client, with like a slideshow looping). The client will just be receiving information from the server and not doing anything with it except displaying it and perhaps a networking element of the client reporting back to the server if the connection is dropped etc. The administrator can use the server to change the look of the advertisement.
I need the server to PUSH OUT to the client computers.I am on a networking degree so there has to be some elements to networking connections going on and programming is not my strong point. Would I write the server and clients in Java or another program? Will there need to be a "middle" program such as a web server?
Ok so this is a grading program. I have it so the user can input 2 students and then at the end using an if statement it is suppose to compare them and print out who had the higher grade. Seems simple but it never runs the line of code to print out whos grade is higher:
if (stuAverage > stuAverage2 ){ System.out.println(student + " has the highest grade of all students entered!"); } else if (stuAverage2> stuAverage){ System.out.println(student2 + " has the highest grade of all students entered!!"); }
Here is the Main class:
import java.util.Scanner; public class Main2 { int stuAverage; static String student;
I have to make cash register system for saloon. it will look like this but I dont know how to do it.
Example : if customer come to make a hair cut. I will click on c button and choose her hair length then the price will come out. Each hair length will have different price. The customer will give the money and the total will show the customer money and the balance will come out after the total is deduct with the price.
I have been working on making a Java application for the Game RuneScape. My goal is to make an Application to where you register on the application and it saves the information in a file. I am also looking to make it so you can transfer money from Runescape to your Account on my Application by submitting a ticket. When you submit a ticket you get assisted by one of the moderators, they trade you in the game and take the money, and then they take that money out of their current account. Admins are allowed to give moderators money via their account or another method. My issue is creating the ticket system. I want to be able to do this all via the application. So basically what i have currently for the application is a chat room, with different rooms available to go into by the users. So I need to make the tickets show up only to Moderators and Admins in the general chat room.
