I'm having trouble getting the text entered in my JTextField to be converted to the conversion formula. The line I'm getting error in is:
String text = text.getText();
Also I created another JTextField in which I want the answer to be displayed in, but I'm not too sure how to go about that.
This is my attempt at it, but it doesn't work because it doesn't make sense;
result.setText1(Integer.toString(celsius));
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class TempConversion extends JFrame
{
private final JLabel ask;
private final JLabel result;
private final JTextField text;
private final JTextField text1;
I have followed the instructions carefully but the conversion values are not correct.
Write a program that displays a table of the Celsius temperatures 0 through 20 and their Fahrenheit equivalents. The formula for converting a temperature from Celsius to Fahrenheit is F - | C + 32 where ¥ is the Fahrenheit temperature and C is the Celsius temperature. Your program must use a loop to display the table.
Code
public class TempConversion { public static void main(String[] args) { for(double i = 0; i <= 20.0; i++) {
The problem I'm trying to resolve now is getting my ActionEvent to send the value input in the JTextArea out to be calculated, then to display the result in my result JLabel.
Here is an image of the GUI :
The basic procedure the teacher is asking for is the user is supposed to enter a temperature in the input. The user then clicks the input scale, and then on the output scale selection the converted value is to be displayed in the output area.
As I mentioned my problem is in the sending of the input value to my calculation area, and getting the value to display in the JLabel.
How should I approach this solution? Do I need to have a listener after the JTextArea of the input box? Will that allow me to limit the input values to numbers only?
final JTextArea inputText = new JTextArea("" + (char)176,1,4); //ReadConsole equivalent to specific input was a number?
Here is the section of code my ActionListener is:
//celOut represents the Celcius output scale JRadioButton. celOut.addActionListener (new ActionListener () {
@Override public void actionPerformed(ActionEvent e) { //if the Celcius Input Scale is selected. if(cel.isSelected())
[Code] ....
All the calculations are required to occur in a separate java file, which what I think is tripping me up. How do I send a value from the JTextArea into the Calc.celToFahr method?
//contents of my Calc.java calculation class. public class Calc { public static double celToFahr(double cel){ return cel * (9./5.) + 32.; } public static double fahrToCel(double fahr){ return (fahr - 32.)*(5./9.); } }
I am trying to create a java file that will print out the temperature in Fahrenheit. This is my code.
import java.util.Scanner; public class TemperatureConverter { public static void main(String[] args) { float temperature; Scanner in= new Scanner(System.in); System.out.printf("Enter temperature in degrees Celsius: "); temperature = in.nextInt(); //Getting a red X next to this line. fahrenheit = temperature * 9/5 +32; //Add this line System.out.printf(+temperature + " degrees Celsius is " + fahrenheit + " degrees Fahrenheit."); //System.out.println(temp1 + " degrees celsius is " + fahrenheit + " degrees Fahrenheit."); } }
I need to know what I am doing wrong. Using Eclipse as my platform. I have entered comments where I am getting red X's.
The error I get when I run the program.
Exception in thread "main" java.lang.Error: Unresolved compilation problems: fahrenheit cannot be resolved to a variable fahrenheit cannot be resolved to a variable at TemperatureConverter.main(TemperatureConverter.jav a:24)
When I try to convert this value, "Testingu2120" (along with UTF coed u2120)comes as a string as part of SOAP response. I need to convert this UTF-8 characters in to a symbol, in this case it is SM (Service Mark) symbol and show it on the UI.
How can we achieve this in JAVA?
I have four different UTF-8 character set to convert.
I have a piece of code as below for date format conversion.
DateFormat formatter1 ; DateFormat formatter2 ; Date date = new Date();
formatter1 = new SimpleDateFormat("yyyy-mm-dd"); date = formatter1.parse("1952-12-10"); System.out.println("before format, date is " + date);
formatter2 = new SimpleDateFormat("dd-MMM-yy"); formatter2.format(date); System.out.println("after format, date is " +formatter2.format(date));I would like to change 1952-12-10 become 10-DEC-52, h
However, I am getting below output:
before format, date is Thu Jan 10 00:12:00 MYT 1952 after format, date is 10-Jan-52
I am trying to get the excel spreadsheet data and converting it in someway to java. I'm looking for something that will print out the java code itself that way I can embed it into future projects.
I am having some issues with errors. Here is my code...
import java.io.*; import java.util.Scanner; public class StormChaser { public static void main(String[] args) { // Constants final int MAX_STORMS = 319;
[Code] .....
I am having issues with these error messages.... I have tried a couple of different things with each error but haven't been able to figure it out.
Exception in thread "main" java.util.UnknownFormatConversionException: Conversion = '1' at java.util.Formatter.checkText(Unknown Source) at java.util.Formatter.parse(Unknown Source) at java.util.Formatter.format(Unknown Source) at java.util.Formatter.format(Unknown Source) at java.lang.String.format(Unknown Source) at Storm.toString(Storm.java:98) at StormChaser.DisplayStorms(StormChaser.java:141) at StormChaser.main(StormChaser.java:53)
Write a program that will provide temperature conversions between degrees Fahrenheit and degrees Celsius. Provide a method that will take an argument representing a temperature in Fahrenheit degrees and return the equivalent temperature in degrees Celsius. Also provide a method that will take an argument representing a temperature in degrees Celsius and return the equivalent temperature in degrees Fahrenheit. Conversion formulas are as follows: F = 9./5. * C + 32, C = 5./9. * ( F - 32 ), where F = Fahrenheit temperature and C = Celsius temperature. You must prompt for input using the Input class methods that are provided as a download for this unit.
I have two questions, 1st is why won't I get an output from my program when I run it? 2nd is how do I prompt for input using the Input class methods downloaded? The downloaded files are in .class form, and won't show any output when I run them.My code is:
import java.util.*; public class temp { public static void main ( String [] args ) { Scanner in = new Scanner(System.in);
I am trying to write a code that asks the user to enter a temperature for each day of the week and then it prints out the high temperature, the low temperature, and the average temperature. This is the code I have so far:
import java.util.*; import java.text.DecimalFormat; public class Lab10 { public static void main(String[] args) { java.util.Scanner input = new java.util.Scanner(System.in); int high, low, i, sum; double avg; [Code] ....
There are a few issues that I am having.
1. I can't for the life of me figure out how to make it print the low temperature 2. I had it running perfectly until I changed one thing and now I get a compile error saying that the last 5 statements are unreachable. (lines 32-37)
This program will not give me the average high temperature for the week and I cannot figure out why! Every time it only spits out "0" whereas the average low temperature works great..
import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Temps_Grid_Keenan extends JFrame { private static final long serialVersionUID = 1L; private static final int WIDTH = 400; private static final int HEIGHT = 500;
I am having trouble returning the DAY and Month that the high and low temperatures occurred on (right now I am only returning the int value) I also need to show how many days were <33 degrees and >75 degrees. I have done a lot of trial and error and searching. I set the String arrays but am failing at tying them in and calling them with the high and low temps.
package nyctemp; public class NYCtemp { public static void main(String[] args) { String[] days = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; String[] months = {"January", "February", "March", "April",
I need all of that to be combined into a single String.format and include the / and unicode symbols for degree fahrenheit. How String.format works so that I can figure out how to achieve that? I've tried a few websites but none of them explain it to the extent that I need to use it.
I am trying to get it to print out an error if F or C isn't entered for the temperature type, but the code I am taking from one of my other similar programs isn't working for some reason.
Also, when I type a string in the temperature I get an exception....I can do the same with that as I would the temp type? I think I may just be putting the code in the wrong spot and thats why it isn't working..
public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Please enter F for Fahrenheit or C for Celsius: "); String fOrC = input.next();
I started taking a java programming class javascript eclipse The program says it wants a monthly temperature chart of two places..Declare an array of values for Blueville temperatures and another array for Orlando temperatures. Then, use what you have learned to produce a program to output the following table:
Blueville Monthly temperatures
jan feb mar apr may jun jul aug sep oct nov dec
3 3 5 10 16 20 24 23 16 10 5 3
Orlando Monthly Temperatures
jan feb mar apr may jun jul aug sep oct nov dec
14 16 12 23 24 25 27 30 25 22 17 15
The warmest month in Blueville is _______
The warmest month in Orlando is ________
The month with the greatest temperature spread is __________
I’m trying to write a program in Java that will take the input of a temperature in Fahrenheit and convert it to Celsius and Kelvin. This is what I have so far but when I run the program on Eclipse it says the temp. in Celsius is infinity and the same for kelvin. Why is it not preforming the operation and spiting out the correct numbers?
import java.util.Scanner; public class Temperature { public static void main(String[] args) { // This program converts temperatures from Fahrenheit to Celsius to Kelvin. double temperature1;// operands double temperature2; double temperature3;
-In your main, you should create a thermostat and thoroughly test it. Be sure to showcase time passing and the temperature reaching the desired setting. Also, showcase switching modes from heating to cooling.
My question is, once it reaches the desired temp, would the thermostat turn off, and then how do you show switching from heating and cooling.
This is what prints.
Thermostat is: true Thermostat is: false The desired temp: 70.0 The current temp: 69.0 Tue Feb 25 19:06:21 CST 2014 Tue Feb 25 20:06:21 CST 2014 Thermostat is: true Thermostat is: false The desired temp: 70.0 The current temp: 70.0
Here is my Class:
import java.util.Random; import java.util.Date; public class Thermostat { private double currentTemp; private double desiredTemp; private double heatingThreshold; private double coolingThreshold;
I wasn't supposed to use the % in front of f.I have to make a program to calculate the average temperature and annual precipitation in Jacksonville. I get this error on line 49:
java.util.IllegalFormatPrecisionException; null (in java.util.Formatter$FormatSpecifier)
I don't get any errors during compilation.Here is my code (I'm not using the system selection yet):
import java.util.Scanner; public class AnnualClimate1 { public static void main(String[] args) { double[] temperaturesInJacksonville = {53.1, 55.8, 61.6, 66.6, 73.4, 79.1, 81.6, 80.8, 77.8, 69.4, 61.7, 55.0};
How to improve my code. I finally was able to create a program that gives you the corresponding letter grade, when you enter in a numeric grade without using an array. The only issue left is that I have to be able to enter 5 grades at a time, and it give me the letter grade for all 5. I have the programming working, but only am able to enter 1 at a time. I am not sure what kind of loop or if I am supposed to use a loop.
public static void main(String[] args){ { int grade = 0; Scanner input = new Scanner(System.in); System.out.println("Enter : "); grade = input.nextInt(); if (grade >= 90)
