I have to create a class that asks the user to answer a multiplication problem. It randomly pulls to integers. If the answer is correct it displays a response if its wrong it displays a response and tells them to try again. at the end it displays all the questions with the answers. For some reason when i run the program it automatically terminates but doesnt give me an error.
Java Code:
import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;
//import javax.swing.*;
public class StudentMath {
Have written a program to open Excel sheet from java program.Below line works fine.
Process p = Runtime.getRuntime().exec(new String[]{""C:Program Files (x86)Microsoft OfficeOffice12Excel.EXE"","C:UsersRASHPA~ 1.ORAAppDataLocalTempExport_xl420314062726 9379706.xls"});
But below code gives error i.e. Executable name has embedded quote, split the arguments
In a project for school. I have a program that links several GUI's as a menu based program. What I am trying to accomplish is when one of the previous GUI's is closed that it doesn't terminate the entire program. There is a lot of classes in the entire project so I'd prefer not to paste all the code here, but if it is necessary I will do so.
I'm creating a program that will compile and run another java program:Lets say I have a program in directory
D:HelloWorldsrc and compiled program will be in D:HelloWorldin inside src and bin is a folder hello (that's a package)
package hello; public class HelloWorld { public static void main(String[] args) { System.out.println("Hello World"); System.out.println("Hello World"); } }
This program will be run by another program (that's the program that I am creating).Here is the code of my program:
package runnercompiler; import java.io.IOException; import java.io.InputStream; import java.util.logging.Level; import java.util.logging.Logger; public final class RunnerCompiler {
I'm working in a GUI program, but I'm not going to put the code because there is a lot of code and files. Instead, I will try to put it an example.
Let say:
I'm working in a GUI program that ask form the user to enter two number's. When the user press at the calculate button. It will show up the output. However, the program won't exit unless the user press at red (X).
int x = user_Input1; int y = user_Input2; int total = x + y; // JOptionPane.showMessageDialog(null, total);
I know that there will be a (total) now, so my question is here how can I reset all the calculation and have a new total that will show up when the user enter two number's again.
I have searched the internet for about 2 days and now i'm posting this. I'm trying to make a program that will let me enter "1" to show how many movies I have watched and press "2" for a new one. The problem I ran into is I enter 2 then when I enter 1 it said "you have watched 0 movies". I know what the problem is I just don't know how to retype it. here is the code.
package stuff; import java.util.*; public class thing {
I just finished a tutorial on youtube that covers the basic java, and now i want to try and make a game / program thing, only problem is that i have never worked with graphics before (i have tried to make ovals, rectangles, and other things with the paint method tho )
I know how to make a jframe and a jpanel, and i feel like i can make a simple "game" (not a complicated one, just a simple one with a guy walking around on the screen) in fact i have already make a such game, where you are a oval walking around on the screen, so thats not really my problem.
My problem is that i want to draw an image on the screen that can walk around instead of the oval, but how to do that. I have made a new project and set up the jframe and jpanel, and my code looks like this:
(main)
import javax.swing.JFrame; public class main_class { public static void main(String[] args){ JFrame f = new JFrame(); f.setTitle("title"); f.setVisible(true); f.setSize(800,600);
[code]...
but once again, i get a blank jframe with no image and no "test" string . How i can display images on the screen?
I am new on this and I will be working in a gpa and average program. This is my code so far: Every time that I try to add the gpa part it gives me errors or just duplicates whatever I've in average and displays it in gpa
/** * This program shows a database of students in a school. * It gathers information as name, classes, grades, and calculates average and gpa average. * */ import javax.swing.JOptionPane;
In this exercise you will write a program that estimates the value of π. Pretend that we are looking at a dartboard in the picture above. If the square is 2units wide and 2 units high, the radius of the circle within the square is 1 unit. Then the area of the circle is π*r2 = π*12 = π. The area of the square will be 2*2 = 4.
The estimation of π will work by randomly "throwing darts" at the dartboard. We will assume that every dart will hit the board but the location of that strike will be random so some darts will land inside the circle and some will land outside the circle. The calculation of π is then the ratio of the number of darts that land inside the circle to the total number of darts, multiplied by 4. Note that as we increase the number of darts used in the simulation, the accuracy improves.
Follow the steps to complete the program:
1.Declare variables that represent x, y coordinates of a dart, the distance of the dart from the origin, the number of darts that land inside the circle, and the total number of darts.
2.Read in the total number of darts (N) from the user and create an instance of the Random class.
3.Create a loop that runs N times. Inside the loop, you will use the nextFloat() method of the Random class to create x, y coordinates randomly, and then compute the distance of the dart from the origin. Determine whether the dart lands inside or outside of the circle.
4.Compute π using the estimation algorithm.
5.Run the program with increasing numbers from 100 to 100,000,000 and observe the accuracy of π.
A file has the data of the subjects and name of professors. The file contains line for each subject. The line starts with professor Name followed by the Subject name.
Harry Williams Advanced DBMS
James H Computer Networks
Sasha Ben Artificial Intelligence
Harry Williams Software Engineering
Palbo Kastro Formal Languages
Alex W Advanced SE
James H Operating System
Harry Williams Theoretical Foundation
Write a program with setter getter method to read the file, and then write a class to store several professors in a hashset (Single Key and Multiple Values).The program should be able to display all the professors in the set and allow the user to search for a professor.
Input:
Professor Name: James H. Then the Output will be:
Subjects Taken by the professor: Computer Networks, Operating System.Display No Classes available if the professor name does not exists .
The objective of the program: Write a method that takes a string as input and returns the letters contained in that string in sorted order as output. For example, an input of "Computer Science" would print the following as output (case is ignored): ccceeeimnoprstuthe code works otherwise
import java.util.Scanner; public class weeklyProblem4 { public static void main(String[] args) { Scanner console = new Scanner (System.in); System.out.println("This program takes a string as input and returns the letters contained in that string in sorted order as output"); System.out.println(); System.out.println("Enter some string"); String userstring = console.nextLine(); sortedString(userstring);
use arrays to store taxpayer information. Use methods for tasks that will be repeated.
-Ask the user how many taxpayers he would like to calculate taxes for. -Ask the user to enter each taxpayer's first name, last name gross income, and number of children. -Each taxpayer's tax due is computed as follows -The taxpayer's dependency exemption is determined by multiplying $3,000 times the number of children. -The taxpayer's net income is determined by taking the taxpayer's gross income and subtracting the taxpayer's dependency exemption. -If the taxpayer's net income is between 0 and 50,000, the tax due is 15% of net income. -If the taxpayer's net income is greater than 50,000, the tax due is -15% of the first 50,000 of net income PLUS -25% of any income over 50,000 -The tax due can never be less than 0. -If the net income is a negative number, the tax due is 0
TAXPAYER INFORMATION: output a message in one dialog box which lists the following info for every taxpayer: first name, last name, gross income, number of children, tax due. AVERAGE TAX: output a message in a dialog box which states the average of the taxes due. PRESIDENTAL MESSAGE: output a message in a dialog box which says either "We computed taxes for the president. " or "We did not compute taxes for the president." The president's name is Barack Obama.
Here is my code so far
import javax.swing.JOptionPane; public class AssignmentSeven { public static void main (String [] args) { String [] taxPayers; String[] firstName; String [] lastName; String message = ""; double[] grossIncome;
I need to write a program that combines everything I learned in my Java course from chapter 1-6 and 8 by Tony Gaddis at least with all the other chapters being bonus points, so I decided to write a program that tells you the binary to hex conversion or hex to ascii conversion. However I keep getting the following errors in my class, enums, and main program that I'm not sure about why. Please do not point out that the numbers in the case select are not what the hex values translate to because I know that, but I was trying to use more meaningful place holders temporarily:
These are the errors for main:
----jGRASP exec: javac BinToHex.java BinToHex.java:9: error: cannot find symbol Scanner keyboard = new Scanner(System.in); ^ symbol: class Scanner location: class BinToHex
[Code] .....
3 errors
----jGRASP wedge2: exit code for process is 1. ----jGRASP: operation complete.
Because of the error in the picture attached I am unable to show the remaining errors for the class and enumsjGrasp Save error for Ascii character import enum datatype.jpg
Here is the code for main:
import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.*; /** This program shows that you can binary to hex and hex to ascii. */ public class BinToHexToAscii
I tried to run the program in eclipse(See Attachments 2 3 4) but I got the following errors(Attach 1), I have attached them as screen shots.
1.Errors
2. Mapper code
3. Reducer code
4. Driver
Since am new to java and hadoop, I want to know the procedure step by step in a brief manner.run this program and rest of the two statements successfully.
Ive been trying to create a program to say how many 5cent,10 cent and 50 cent coins there are if you put a number in example 20. I used the init method because thats what the teacher told me to use but i have no clue on what to do.
import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.Random; public class FileHandlingDemo {
[code].....
As you can see my Intention is to save randoly generate Integer in the output file And this is not working but if I use Something like this
import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; public class FileHandlingDemo {
[code].....
it's working fine reading that from Input.txt and writing that data in output.txt file. but not in first case Both file are in working directory already created.Where is wrong?
I just wanted to ask that when we invoke a function by passing certain arguments in it ,so for instance I have certain variables like a,b and c with some values assigned to them,so when I invoke a function like func(a*b , 8, c+a) where the function func accepts parameters like func(int x,int y,int z) ,so is there any order of evaluation of expressions defined like the value of c+d would be evaluated first and then assigned to variable z ,because in C we have sequence points and since comma when acting like a separator is not a sequence point so any of the expression can be executed first ,so basically is there any sequence in which the function arguments are assigned to the parameters of the function or any relation with the stack implementation.
Even in C ,the printf starts executing its expressions from right to left so basically in why does it happen there when comma is a separator in a function argument.
I need to change the program below to an "array"....
public class RecursiveFibonacci { public int fibonacci(int n) { int result; if (n == 1 || n == 2) result = 1; else { int n1 = fibonacci(n-1); int n2 = fibonacci(n-2);
