Unable To Pull Data From Another Class Into GUI Already Extending JFrame
Apr 26, 2014
I've been trying to pull data from another class file "Calculations.java" and have it be displayed in a TextField in "DataAnalyzerGUI.java". Here is how the hierarchy is broken down for my assignment:
DataAnalyzerGUI.java extends JFrame
ReadFiles.java extends DataAnalyzerGUI.java
Calculations.java extends ReadFiles.java
Everything displays and functions correctly in a command prompt if I use a line like this:
System.out.println ("
Lowest opening " + dateArray[lowestOpenIndex] + ": " + dataArray[lowestOpenIndex][2]);
But trying to get it to display in a GUI has been quite troubling.
I know the code is supposed to look something like this:
dataOutput.setText(DESIRED CODE HERE);
But I am unable to find anything of value to work out.
I have attached my complete project....
Attached File(s)
Assignment 4.pdf (247.05K)
Assignment 4.zip (235.81K)
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Oct 18, 2014
What is the difference between extending JFrame in one class and simply constructing a new JFrame object in that same class? What benefits do I have with each solution, providing I want to use that class to create the GUI. Is it the same or are there differences rather than not having to reference to a new JFrame to be able to use its functions?
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Apr 29, 2014
This program reads off of a text file that I have attached to my post. It is supposed to:
display the total sales for each week
the average daily sales for each week
the total sales for all of the weeks
the average weekly sales
the week number that had the highest amount of sales
the week number that had the lowest amount of sales
I can get everything but the very last one. In my code you will see that I tried to use a really large number so it would pull out the lowest amount, but it still didn't work: low = 100000000;
SalesData.txt (173bytes)
Number of downloads: 29
import javax.swing.JOptionPane;
import java.io.*;
import java.text.DecimalFormat;
import java.util.Scanner;
[code]....
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Dec 12, 2014
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import java.util.Scanner;
//This class keeps 5 scores entered by the user
public class Average
{
private int[] data;
private double mean;
public Average()
[Code] ....
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Here my RFID class :
package view;
import java.util.*;
import java.io.*;
import javax.comm.*;
public class ListPorts implements Runnable, SerialPortEventListener {
static CommPortIdentifier portId;
static Enumeration portList;
[Code] ....
Is it possible that my RFID class merge with my Main class ?
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Jul 3, 2014
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public class A extends A.B {
public static class B { //ideally I would like this to be private/protected.
}
}
When I try to compile this program, I get the error message "Cyclical inheritance involving A." This error does not make much sense because, since the inner class "B" is static, it requires no instance of "A" (it does not inherit from "A" or uses it). My question is "Is it possible to do something similar to this structure?" I have searched many forums in search of the answer but have not found anything that attempts to explain it. The closest problem that I have found is one relating to the inheritance of a nested inner class from another class. I would like to express that the problem that I am having involves a class defined within the inheriting class.
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Oct 21, 2014
I am writing a program that should take a url and scan the page for any links. It is in the beginning stages, but I ran into an error when I tried to extend a class. There's a lot going on in this code, but the error is caused by the constructor.
Error message at compile time:
"constructor Page in class Page cannot be applied to given types;
{//Constructor
^
required: String
found: no arguments
reason: actual and formal argument lists differ in length".
Here's the code(first my class, then the class I extended)
public class SearchEngine extends Page {
public static Color customGreen = new Color(69, 194, 33);
public static Color customYellow = new Color(232, 166, 12);
public static Color customBlue = new Color(25,97,255);
public static Color customYellowComp = new Color(178,125,0);
[code]...
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Jun 22, 2014
So I have this line of code...
ioexception11.addChoosableFileFilter(new Jframe());
And when I compile it gives me...
error: constructor Jframe in class Jframe cannot be applied to given types;
ioexception11.addChoosableFileFilter(new Jframe());
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Apr 4, 2015
Tried it, I get red line under it, tried to do "jframe1 jframe1 = new jframe1(variable);
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CashPaybtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
//System.out.println("CashPaybtn.actionPerformed, event="+evt);
//TODO add your code for CashPaybtn.actionPerformed
//PaymentMethod.setVisible(false);
[Code]...
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Aug 25, 2014
i've tried changing the path 10000 times. idk if its wrong in the code.
Java Code: import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
[Code]...
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Feb 7, 2014
I am running this method but for some reason I am not able to find the data record, it keeps going to the catch. I have the data.txt file in the same directory as the java file.
public static Games[] gamesRecord(){
Games[] game = new Games[50];
try{
Scanner dataFile = new Scanner(new File("data.txt"));
for(int i = 0; i > 50; i++){
game[i].title = dataFile.next();
game[i].releaseDate = dataFile.nextInt();
game[i].redistributions = dataFile.nextInt();
game[i].platformRelease = dataFile.next();
[code]....
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public class Main {
public static void main(String[] args) {
LinkedHashMultimap<String, Integer> testMap = LinkedHashMultimap.create();
//ListMultimap<String, Integer> test = ArrayListMultimap.create();
OutputStreamWriter outputStream;
testMap.put("NumberA",1);
testMap.put("NumberA", 33);
[Code]...
I performed a print statement to verify that the LinkedHashMultiMap is not replacing values with the same key (which it was not) and realized that the overwriting was occurring when I wrote the data to a file.
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I am trying to connect to a local service over UDP - the simulator works fine, but my code does not... The sender is a separate thread and I have tried blocking, non-blocking, connecting, not connection, reading and re-reading the Oracle docs,
Java Code:
package my.comm;
import my.myMethods;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.DatagramChannel;
import java.util.LinkedList;
import java.util.Queue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.logging.log4j.LogManager;
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[code]....
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Aug 12, 2014
I am trying to use double data type in a for loop for precise operations and just to see if there could be any problem doing that I tested a small code :
public class doubleLimit {
public static void main(String[] args){
for(double i=-0.1;i<=0;i+=0.01)
System.out.println(i); }}
The output I was expecting is :
-0.1
-0.09
-0.08
-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
0.00
But the output of the code is :
-0.1
-0.09000000000000001
-0.08000000000000002
-0.07000000000000002
-0.06000000000000002
-0.05000000000000002
-0.040000000000000015
-0.030000000000000013
-0.02000000000000001
-0.01000000000000001
-1.0408340855860843E-17
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PullActivity
but1 = (Button)findViewById(R.id.buttonll);
tx = (TextView)findViewById(R.id.editText1);
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but1.setonclickListener(new onclickListener(){
[Code] ....
The app works fine when it started. When I press the button in PushActivity, it crashed and the error came from my textview in PullActivity.
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[public class Login
{
private String username;
private String password;
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[Code]...
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We used the following jquery plugins in our project
jquery 1.8.3
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Actually the servlet is present is the mentioned address. but it is not connecting to it
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private class RunSearch extends AsyncTask<String, Void, String> {
private Exception e;
protected String doInBackground(String ...query){
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Nov 29, 2014
My code below creates the 2 files successfully, but it is not able to write the sample data into the newly created file. I can't figure out the reason why.
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try{
// stuff here
}
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String dirString = System.getProperty("user.dir");
String defaultFile = "config";
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------------------------------------------------
I have two Java classes: User and UserIO
-------------------------------------------------
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[Code] ....
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