I am trying to set the look and feel for my calculator to Nimbus but I am having some problems. It looks horrible though nothing at all like the screenshots I have seen for it.
import javax.swing.*;
import java.awt.*;
import javax.swing.UIManager.*;
[Code].....
I'm displaying a table with several read-only pieces of data, and a checkbox field that toggles the row color. The background color for the checkbox is not toggling correctly. I put together a SSCCE:
import java.awt.Color;
import java.awt.Component;
import java.util.ArrayList;
import java.util.List;
[code]....
If I comment out the Nimbus look and feel, it works as expected. I googled this problem and found one possible solution on Stack Overflow. Their suggestion is:It's a bug in the synth-installed renderer, quick hack is to force the rendering checkbox opacity to true: ((JComponent) table. get Default Renderer(Boolean.class)).setOpaque(true);
I tried using this line and setting the opacity to true, but it renders the background white. I'm using Java 1.7.0_25.
I have moved this to its own thread because I was concerned that I might have hijacked the other OPs thread. As I stated earlier, I decided to try changing the arrowHead on a JComboBox since it should be easy. I created a polygon so I could fill in the shape. However, I believe that the graphics context passed to the paint method has been rotated counter clockwise by 90 degrees. I had assumed that (0,0) would be upper left corner. But (0,0) is lower left corner and (0,height) is lower right corner. Rotate those 90 degrees clockwise and you get them in the (my) expected positions. I also grabbed the AffineTransform from both the paint method and a JPanel paintComponent method. If you examine the trig values for each transformation you will see they are different.
It is not documented in the paint interface. It could just be related to the Nimbus look and feel. I have not checked out others. I did a web search and did not see any info regarding this.
Attached is my modified version of KevinWorkman's code posted in Changing the Foreground Color of ArrowButton of JComboBox in nimbus LaF. I commented out the part that draws the Triangle (It points right instead of down). The key are the circles which should locate the top left and bottom left points.
Java Code:
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Polygon;
import java.awt.geom.AffineTransform;
import java.lang.reflect.InvocationTargetException;
[Code] ....
Ihave assignment to work out rate of pay based on hours worked.
rate is 4.60 per hour for 1st hours and then extra payment 4.60 * 1.5 for hours over 40 only.
It's this part I'm having problems with.
My if statement is below but I'm struggling with how I should write the if hours > 40 one.
[
public void actionPerformed(ActionEvent ev)
{
hours1 = Integer.parseInt(hours.getText());
if (hours1 <=40) {
pay1 = (rate * hours1);
}
if (hours1 >40){
pay1 = (rate * hours1 -40) * (rate * 1.5);
}
hours.setText("");
pay.setText(""+pay1);
}
I am a beginner with Java. I have never used SWING before but I have to use it now and I am clueless. I don't know if what I am doing is right.I need to create a simple calculator. My problem is getting the buttons the user clicks to appear in a text field. I know I haven't added the =/*- buttons yet.
I have left actionPerformed practically blank, what to put in ?
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
* Created by IntelliJ IDEA.
* Date: 11/12/2014
* Changing Face Program.
*/
public class Calc extends JFrame implements ActionListener
[code]...
Why the JFrame is not working
// Project: RestaurantBillCalculator.java Calculates a table's bill.
// Import statements for different classes
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
public class RestaurantBillCalculator extends JFrame
[Code] ....
So, I'm working on a Tip Calculator for fun. I have everything worked out for the most part. The feature I am trying to add is to give the user the amount of change they'll get back from their transaction. I do not ask the user any information other than what is their bill.
Please enter your bill total : 5.50
Please enter your name : some name
Total : 5.50
Tax : 0.48 -- Based off a tax rate of 8.75%
Total with Tax : 5.98 --
20 percent Tip : 1.10
Total with Tax and 20 percent Tip : 7.08
Total change : <-- I believe this will be about $2.92
I want the total bill to round to the nearest $10 value (e.g. for $5.50, calculate bill to $10. For $13.00, calculate bill to the $20.00, and so on... This way I get an accurate amount of change to give back to the user.
I made a MVC calculator. I was wondering if you could take a look at my design and if I was on track. I am still working on getting it to actually calculate something. All the buttons respond and print text on the JTextField but it is not calculating.
package calculator.MVC;
import javax.swing.JButton;
import javax.swing.JTextField;
public class CalculatorModel {
private int sum;
private int number;
private char opt;
[code]....
I am making a calculator in Java. However, when I press the "=" button on my calculator, it always returns 0.0, no matter what. I don't understand why? The code is below:
import javax.swing.*;//import the packages needed for gui
import java.awt.*;
import java.awt.event.*;
import java.util.Arrays;
import java.util.List;
import static java.lang.Math.*;
public class CalculatorCopy {
[Code] ....
import javax.swing.*;
public class BasicCalculator{
public static void main (String[] args) {
String output="";
double n1,n2;
String operation;
operation= JOptionPane.showInputDialog("Please enter your operation");
[Code] ....
How to add a loop in this problem:
I have the basic workings of this program just doing all the printing at the end is throwing me off. Anyway here are some of the requirements and my code:
1. Allow the user to input an individual's hours worked.
2. Accumulate the total regular hours worked, the overtime hours worked, the amount of the regular pay, the amount of overtime pay, and the total payroll, for all of the employees entered.
3. Allow the user to enter a zero (0) as the Boolean expression to end the loop.
4. When the loop ends print out all of the accumulated totals with appropriate labels, each on a separate line.
import java.util.Scanner;
public class WhileLoopPayCalc
{
public static void main(String [] args)
{
final double REGULAR_HOURS = 40f;
final double HOURLY_WAGE = 12.5f;
final double OVERTIME = 1.5f;
[code]....
I am facing problem during calculation in my awt calculator. It is showing NumberFormatException. Below is part of code.
if(e.getSource()==b14)//On button 14, label is "/"
{
String v1=tf.getText().toString();
num1=num1+Integer.parseInt(v1);//num1 is as integer variable
tf.setText("");//tf means textField
}else
[code]....
I can not this to work correctly.
public static void main(String[] args) {
FloatWrapper x1=new FloatWrapper(0);
FloatWrapper x2=new FloatWrapper(0);
do{
switch(menu()){
case 'a': if(dataInput(x1,x2)) add(x1,x2); break;
case 'b': if(dataInput(x1,x2)) subtract(x1,x2); break;
[code]....
I'm new to java and have been coding for a few hours. I tried to create a calculator (Which has no GUI, just text inputs)which will let you select how to process the two integer (Add, minus, times etc.) I cant seem to get it to work. I will put in the process way such as times and have entered two integers and every time it doesn't work. Here is my code:
import java.util.*;
public class Calculator
{
public static void main (String args[])
{
int input1 = 0;
int input2 = 0;
int answer = 0;
[code]....
I have got a problem when coding a java program to create a calculator with JCreator. How to write codes for decimal point.
Decimal point should not be set to the text more than 1 time until an operator is pressed. How can I use a Boolean value to solve this problem.
I am currently working on a small java programm. I use netbeans for it. And obviously I am new to java.
Basically its a calculator that change the input value into another value: like 10 € into whatever $ and same with Inch and Centimeters.
Therefore I need a second jDialog Form where i can change the factors for the calculator and start the calculator again.
Here is my problem: I can open the second Dialog but if I want to change the factor it doesn't change the value in the variable and the second calculator frame is with the old factors. It seems the double variable isn't working globally
I will add the files later when i find out how?
So I am working on a PostFix calculator that is used in command line for a class project, and I am having a little trouble on developing a memory for it. I have been told to create a hashMap and I have researched it and understand the basics of it. I have the calculating method working, but what I am having trouble trying to implement a way for the user to declare variables. For example this what the user should be able to do:
> a = 3 5 + 1 -
7
> bee = a 3 *
21
> a bee +
28
[code]....
I just need to be able to save the answers as a variable the User names, such as the example and let the user be able to use the variables later.
the program basically has a random number generating, and I want to ask the user to try to guess the number, and keep guessing until the number is right. In addition to this, I need to put in extra conditions for too high or too low by 10. So for example, if they user guesses a number and its off by more than 10, then it prints that they guessed too high, and if its below 10 they guessed too low.
import java.util.*;
public class RandomNum
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
[code].....
Modify the program to keep the user trying to guess the number till he/she gets it right, and stop once you guess the right number.Too high, high, too low, too low( If it's off by more than 10 = way too high, if its less than 10, way too low)
my task is to add a few functions to an example calculator. I managed to add a divide button but I simply can't figure out how to add a working Pi and reciprocal function.
package newjavaproject;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class CalculateurNC extends Applet {
[code]....
I got to make a java code for my class. I must make a calculator using stacks. I have a code but i got some mistakes. Here is the code
Java Code:
package stackscalc;
import java.util.Scanner;
import java.util.Stack;
import java.util.EmptyStackException;
class Arithmetic {
int length;
Stack stk;
String exp,
[Code] .....
import javax.swing.JOptionPane;
public class Calculator {
public static void main ( String args[] ) {
double n1 = Double.parseDouble(JOptionPane.showInputDialog(" Enter first number: "));
double n2 = Double.parseDouble(JOptionPane.showInputDialog(" Enter second number: "));
String x = JOptionPane.showInputDialog("Enter operator: ");
double result;
[code].....
Write a program that mimics a calculator. The program will need to accept as input two numeric double values, and accept the operation to be performed as the third input. The operation to be performed will be input in the form of the character representing the java operator for the operation to be performed (i.e + for addition, - for subtraction, * for multiplication, / for division, or % for modulus). Once the program has read these 3 inputs it should output the numbers, the operator, and the result. (For division, if the denominator is zero, the program will output an appropriate message (i.e division by zero is an invalid operation). Please use the JOptionPane class for both accepting the required inputs and for the required output demonstrated below.Some sample output may look as follows:
3 + 4 = 7
13 * 5 = 65
10 / 3 = 3.33333333
Error Messages:
3 errors found:
File: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java [line: 23]
Error: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java:23: 'else' without 'if'
File: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java [line: 31]
Error: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java:31: 'else' without 'if'
File: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java [line: 37]
Error: /Users/gcaruso/Documents/CISS 110/Module 3/Module 4/Calculator.java:37: 'else' without 'if
I am trying to make a calculator using Java GUI. I've managed to make an ActionListener and add it to a button, but I've made an error in my code that I'm unsure of how to solve. Because of how I've written the code, only one number can be placed in the text field. For example, the an ActionListener for the three button on the calculator was added to the button, but no matter how many times the user presses the button, only one 3 will appear in the text field. The code is below:
import javax.swing.*;//import the packages needed for gui
import java.awt.*;
import java.awt.event.*;
public class Calculator {
public static void main(String[] args) {
JFrame window = new JFrame("Window");//makes a JFrame
window.setSize(300,350);
[code].....
As you can see, because the compiler forces the String variable to be final, so when the user presses the button, the code simply shows how a space character and three character would look like, because the String variable can't change. How do I write my code so that every time the user presses the button, a character is added to the text field?
Why I am getting errors for this program I (tried) to write. I am new to java.
import java.util.Scanner;
public class TheBarkingLot {
public static void main(String args[]) {
int n;
Scanner input = new Scanner(System.in);
System.out.println("How many large dogs are boarding today?");
[Code] ....
I've made a calculator that can add, subtract, multiply, and divide, but I still need a clear function and a square root one for it. I've tried going on the various calculator tutorials, but they don't work.
And here's my code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calculator extends JPanel implements ActionListener
{
private JTextField display = new JTextField("0");
private String button = "789/456*123-0.+=";
private double result = 0;
[Code] .....
i got a problem with this program.I am supposed to make a calculator using stacks but it seems that i m stack. i can t get the right recognition
for () and {} []
its not necessary to use all these symbols.just a simple () will do .here s the program
package stackscalc;
import java.util.Scanner;
import java.util.Stack;
import java.util.EmptyStackException;
class Arithmetic
{
int length;
Stack stk;
String exp,
postfix;
[code]....
How to make my program look nice. I have to create a mortgage calculator with no functionality, so it basically just has to be a window that looks like this:
Here's my code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MortgageCalculator {
public static void main(String[]args) {
CalcWindow calculator = new CalcWindow();
[Code] .....
Here is the output I am getting:
How do I make my program output look similar to the 1st picture?