I am creating a body mass index calculator and i was wondering how i could make its so that the program resets itself once the BMI has been found....
My code is below...
package bmiCalculatorSource;
import java.util.Scanner;
public class BMICalculator {
public static void main(String[] args) {
final double KilogramsPerPound = 0.453;
final double MetersPerInch = 0.026;
[Code] ....
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.
how I would achieve the concept of saving the contents of a JTable, so even after program restarts, the table would retain the data. I am developing a utility that will be a password storage book. The user enters passwords and they are stored in a JTable. Currently, the table resets whenever the program is restarted, however I would like it to keep it's data. URL....
View Replies View RelatedI am trying to create a Hangman program using Arrays. When trying to compile my code I get the following error: 50: error: no suitable method found
for setCharAt(int,String)
method StringBuffer.setCharAt(int,char) is not applicable
method AbstractStringBuilder.setCharAt(int,char) is not applicable
Here's the code:
import java.util.*;
import java.io.*;
public class hangman {
public static void main() throws IOException {
Scanner kb = new Scanner(System.in);
String filename;
[code]....
I have written a sample java program, in which I have imported a package com.ibm.mq.
While compilation in as400 machine,I am getting an error like package com.ibm.mq not found.
I have set classpath and also run a hello world program.
I am working on a magic square program. My program compiles. However, when I enter the square dimension it does not select the correct file. The error says "java.io.FileNotFoundException." It looks like it inserts 0 instead of the entered dimension.
import java.util.*;
import java.io.*;
public class Trial2
{
public static int size, row, col;
public static void main(String[]args)throws java.io.IOException
[Code] ....
I made a blackjack code in java and I need to find a way to replace the place where I added a system.exit with a way to ask the user if they'd like to play again and restart the loop, keep in mind that I don't need the program to restart as I'd like to keep the value of their chips considering if they've won or lost.
Secondly, because it is a blackjack code, when it deals the cards, I would like for it to also print out K, Q or J but still consider it the number 11. Can I make an Ace count as 1 and 11?
One last question, is there anyway to add the suits of the cards such as (clubs, spades etc.) but the actual signs and if the signs aren't possible at all then the letter ('C', 'S', 'H', 'J') will have to do I guess.
import java.util.Scanner;
class Blackjack {
public static void main(String[] args) {
Scanner scan = new Scanner (System.in);
Scanner num = new Scanner (System.in);
System.out.println("Welcome to Blackjack!");
[code]....
import java.util.Scanner;
public class Arraykey {
public static void main(String[] args) {
System.out.println("Enter array size: ");
Scanner input = new Scanner(System.in);
int size = input.nextInt();
int [] a = new int[size];
for(int i=0 ; i<size ; i++){
[Code] ....
how to make this restart button work. This is what I have so far. I have put the restart button code in red and bold...
package Game;
public class Buttons extends javax.swing.JPanel {
private GameWorld world;
private int restart;
[code]....
If I for example choose 8 as "multiplikationstabell" and 4 as "faktor" the whole code works except that "svar" gets printed as 8 in every turn. Why? "Faktor" gets added with 1 every time but "svar" stays at 8.......
import java.util.Scanner;
public class Multiplikationstabell {
public static void main(String args[]){
Scanner Heltal = new Scanner(System.in);
[Code] .....
I have tried as much as I can to place code to give me only two decimals in answers but cannot get it to work not sure if placement or syntax.This is code so far and it works but gives answers to 8 decimals.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
</head>
[code]...
I am new to programing and I am making a dice game where I have to roll two dice and add the total together for each dice (2, 3, 4 ect.) I have all the program finished except one thing.
How would I use the * character that shows the total percentage each number was rolled. Each * will represent 1% of the total rolls. Instead of saying there were ( 4 ) 2's rolled i have to put ( **** ) 2's rolled.
2: ***
3: ******
4: *********
Will the postfix x++ and the prefix --y change the answer for this question?
If x has the value 10 and so does y, then what is the value of (x ++) * (-- y)?
Answer: 11*9
I would like to put the answer of JCheckBox inside of a JTextArea. How to call the answer of JCheckBox if its check the response should be Yes if its unchecked the response should be No, and the yes/no answer should be appear inside JTextArea. But my problem is inside the JTextArea the answer from a JTextField and JComboBox is also there, and they should be appear in a parallel. I attached the physical appearance of the GUI.
Attached image(s)
I want to design an open-answer quiz game using Java. Basically, the plan is to design a quiz where the name of a medicine is displayed as "the question" and the player will need to input the unique code (as "the answer") of the medicine in an open box (all the codes are two characters). The list has about 204 named medicine (with potentially more to be included at a later stage). The questions will not appear in the same order for each session restarted; they will appear randomly.
The player will have 60 seconds, and for each correct answer, will score 1 point and add 2 seconds to the timer. The player will also have 6 "lives", and for each incorrect answer, the player will lose a life, with no effect on the time.
The idea of the game is that the player memorise as many of these medicine codes as possible.
I am writing a simple learning program that does basic math. Everything is working as needed except for when it comes to division. I need to know if there is a way to format the users input to two decimal places and that when the program checks the users answer against the division, it gives it a yay or nay. Right now, it wants the answer out to 12 decimal places.
So for 5/3
I would like it to accept the answer 1.67
not 1.666666666667
Is there a way to do this?
I am having trouble figuring out where to put %.2f in my code. I need it to get my answers for surfaceArea and Volume to be rounded to two decimal points. I have everything completed but wherever i put it, it seems to not work.
System.out.println("This program will compute the volume and surface area of a rectangular prism.");
String output;
double length;
double width;
double height;
double volume = 0;
double surfaceArea = 0;
System.out.printf("%.2f", surfaceArea);
[code]....
I want to design an open-answer quiz game using Java. Basically, the plan is to design a quiz where the name of a medicine is displayed as "the question" and the player will need to input the unique code (as "the answer") of the medicine in an open box (all the codes are two characters). The list has about 204 named medicine (with potentially more to be included at a later stage). The questions will not appear in the same order for each session restarted; they will appear randomly.
The player will have 60 seconds, and for each correct answer, will score 1 point and add 2 seconds to the timer. The player will also have 6 "lives", and for each incorrect answer, the player will lose a life, with no effect on the time.The idea of the game is to support the player memorise as many of these medicine codes as possible. How this can be achieved from total grassroots.
I want make a math equation game. usually math game use equation for the question and we answer that equation. ex : what is the result of 2*5 / 2+2/ 2^2 etc. and we answering that. but i want to make it different so i want to make the equation answer as the question and the equation as the answer of the game. Ex : the question is 54 so we can answer it with 9*6 or 24+30. and this is my java code
package coba;
import java.util.Scanner;
public class Coba {
public static void main(String[] args) {
double angka = Math.random()*70;
[Code] ....
but when i run it the error code show like this : Quote
package FracCalc;
import java.util.Scanner;
public class FracCalc {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int n1 = 0; //n1 = first numerator user have to enter
int d1 = 0; //d1 = first denominator user have to enter
int n2 = 0; //n2 = second numerator user have to enter
int d2 = 0; //d2 = second denominator user have to enter
int numeratorAnswer = 0; //calculates numerator of an equation
int denominatorAnswer = 0; //calculates denominator of an equation
[code]...
I mean its not that important but i figure it will be better if I could print out the answer both in fraction format and decimal format. while my answer prints in fraction just fine how do i show it in decimal?
System.out.println("");
System.out.print("And ");
System.out.print("answer in Decimal is: ");
decimalAnswer = ((double)numeratorAnswer/denominatorAnswer);
System.out.println((float)decimalAnswer);
Code in the book is written exactly like this:
import java.util.Scanner;
public class AdditionQuiz {
public static void main (String[] args){
//Generate random two integers using utility System.currentTimeMillis
int n1 = (int)(System.currentTimeMillis() % 10);
int n2 = (int)(System.currentTimeMillis() / 7 % 10);
[Code] ....
however the true/false result can not be printed due to the "answer" variable...
Is there any kind of way to generate HTTP request within a servlet, dispatch it to the server and get back the answer delivered to the servlet? Or are the servlets meant only to respond to passed requests, not generate them?
(I asked a similar question here: [Code] ..... but no luck)
The problem occurs after the user inputs the guess.... it either runs the for loop if guess = numtoguess and reveals the answer even if the user input is wrong.... or it always runs the first if statement in the while loop if guess!= to numtoguess... heres the code
public static void main(String[] args) {
String[] Answers = {"yes", "Yes", "No", "no"};
String Name = JOptionPane.showInputDialog(null, "Hello, What is your name?","Random Game", JOptionPane.QUESTION_MESSAGE);
String UI = JOptionPane.showInputDialog(null, Name + " do you want to play a game", "Random Game", JOptionPane.QUESTION_MESSAGE);
[Code] ....
I'm trying to get the program to roll a four sided die between 100 and 1000 times, depending on your input, and then displaying the answer.
public class Lab08
{
public static void main(String[] args)
{
int v1 =0, v2 = 0, v3 = 0, v4 = 0;
int n;
char response;
System.out.print("Enter number of rolls (100-1000): ");
[Code] ....
I have a jar file.and i imported its classes to my program..
let say i have a code
source code is at /home/t_bmf/Java/src
import firstjar.FirstJarPrint;
public class TestJar {
public static void main(String[] args) {
//FirstJarPrint jar = new FirstJarPrint();
}
}
well i have successfully compiled it using command below:
javac -cp ".:/home/t_bmf/Java/lib/FirstJar.jar" -d /home/t_bmf/Java/bin TestJar.java
it means that i don't have any compilation error right?so all classes found properly.But whenever I run the program I always got this error:
java -cp /home/t_bmf/Java/lib/FirstJar/jar:. TestJar
Exception in thread "main" java.lang.NoClassDefFoundError: firstjar/FirstJarPrint
at TestJar.main(TestJar.java:6)
Caused by: java.lang.ClassNotFoundException: firstjar.FirstJarPrint
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 06)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 47)
... 1 more
I think it has to be no error since i have compiled the program successfully right?if it really didn't find the class, then it must be a compilation error right?
is there something wrong with the way I execute the program?
note: i created the program in UNIX
I have an issue trying to read a file. Iam getting a file not found ex, but the file seems to be there.
This is my project
This the code that is loading the file.
Java Code: public GATEApplication(String appPath) {
try {
loadGATEApplication(appPath);
[Code].....