Fixing JTable Columns In Place And Length

Jan 26, 2014

now i'm working on a program which contain JTable..how i can make the columns fixed in it's place and how i can make them in a fixed length.

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Equal Values In Two Columns For Every Row In Jtable?

Feb 5, 2014

I have a JScrollPane with two coulmns. In the first column I have an image pane JTable, and in the second a list with names of sections. This second column I try to divide in two columns, one (the second column) to display the names of the sections (each row contains one name), and in the other column (the third) I want to show some values for every section in the row respectively. But, instead of displaying the desired values in the third column, I get the same names of the sections as in the second column. Here is a part of the code I have:

private Vector<Section>daten = new Vector<Section>(0); //These are the values for the first column in the Jscroll
private String[] header = {"Section","calcGYR"}; // These are the values for the second and third column (in this case the header for the both columns
public TrafficObserveModel(Vector<Section> daten) {
setData(daten);

[code]....

But I don't know how to modify the methods in order to render the desired integer values in the third column.

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Swing/AWT/SWT :: Jtable Find Duplicates By Two Columns

Nov 30, 2014

I'm trying to remove duplicates from table. I want to remove only those rows which are both id and data equal. My code failed at fourth line.

int i=jTable1.getSelectedRow();
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
jXDatePicker1.setFormats(dateFormat);
String date = dateFormat.format(jXDatePicker1.getDate()).toString();
String c1=jTable1.getValueAt(i, 0).toString();
String c2=jTable1.getValueAt(i, 1).toString();

[Code] .....

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Swing/AWT/SWT :: Resize Columns In JTable That Has No Header?

Feb 26, 2014

Is it possible to allow users to resize columns in a JTable that has no header? I'd like the user to be able to grab the column lines on any of the data rows and be able to resize just like they can in the header.

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How To Merge Two SQL Table Columns Into One JTable Column

Sep 5, 2013

I have a database table containing two columns A and B. They both contain integers. I'd like to know if it's possible, when displaying them in a JTable, to be combined in one column X. I still need, however, to be able to distinguish them from each other when selecting a row from the JTable. E.g. to store each of the values in a a separate variable. Maybe I can combine them when reading from the ResultSet and use some sort of delimiter ? But how?

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Swing/AWT/SWT :: Create TreeTable - Parent Row With 6 Columns And Child Row Having 4 Columns

Dec 2, 2005

I am very new to Java Swing. I have to create a TreeTable in Java Swing with a Parent Row having say 6 columns and its all child row having just 4 columns. like shown below

Parent row:
-Column1-+-Column2-+-Column3-+-Column4-+-Column5-+-Column6-+

Child row:
--CloumnC1--+--CloumnC2--+--CloumnC3--+--CloumnC4--+

Can this be achieved using JSwing ?Also, Can I be able to Change the Column Headers Correspondingly when user clicks on Parent row and Child rows?

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Instead Of Different Values In Two Columns Per Row In Jtable Getting Same Values

Feb 5, 2014

I have a JScrollPane with two coulmns. In the first column I have an image pane JTable, and in the second a list with names of sections. This second column I try to divide in two columns, one (the second column) to display the names of the sections (each row contains one name), and in the other column (the third) I want to show some values for every section in the row respectively. But, instead of displaying the desired values in the third column, I get the same names of the sections as in the second column.

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Fixing CalculateWeeklypay Methods Of Employees?

Apr 26, 2014

I have now four types of employees. Managers (who receive a fixed weekly salary), Design workers (who receive a fixed hourly wage for up to the first 40 hours they work and "time-and-a-half," i.e., 1.5 times their hourly wage, for overtime hours worked), Sales workers (who receive a $250 plus 5.7% of their gross weekly sales), and Manufacturing (who receive a fixed amount of money per item for each of the items they produce -- each manufacture in this company works on only one type of item). and here are my classes:

employee class

the problem is i get this output:

You chose to open this file: Employees.txt
John Smith Manufacturing 6.75 120 444
0.0
Betty White Manager 1200.0 0 111
0.0
Stan Slimy Sales 10000.0 0 332
250.0
Betty Boop Design 12.5 50 244
0.0

meaning that it is getting 0 for all my calculations and leading to this weekly report:

WEEKLY PAY REPORT FOR Wacky Widgets COMPANY
Employee
0
WEEKLY PAY
250
Total Payroll: $0.0
Total number of managers paid:1
Total number of Design Employees paid:1
Total number of Sales Employees paid:1
Total number of Manufacturing Employees paid:1

fixing my methods so they can accept the integers of the file and use them in the calculation since all im getting at the moment are 0 values.

here is the abstract class from which all the other employees type are extending from

public abstract class Employee {
public abstract double calculateWeeklyPay();
private String fName;
private String lName;
private int EmpId;
private Position p ;

[code]....

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Fixing Cross-site Scripting In Search Box

Aug 13, 2014

fixing an issue in the search textbox in one of the jsp's. I was informed that cross site scripting can be done in the textbox and I kept the below code in my jsp to fix the issue:

searchTerm = request.getParameter("search");
searchTerm = searchTerm.replaceAll("<", "<").replaceAll(">", ">");
searchTerm = searchTerm.replaceAll("[^A-Za-z0-9 ]", "");
searchTerm = searchTerm.replaceAll("eval((.*))", "");
searchTerm = searchTerm.replaceAll("["'][s]*((?i)javascript):(.*)["']", """");
 
[code]...

Now, after applying the above code, the cross site scripting can be done and the problem is that the search can't be done using the textbox and all the time will display none results.

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Analyzing And Fixing Failed Cases In Stress Testing

Apr 29, 2014

There are few modules in our application whose performance degrade with time when 50-100 simultaneous users are working on them at a given instance.The memory allocations are taken care of to allow maximum data.My issue to where to start finding the root cause.

I am currenlty using JvisualVM for profiling and finding memory leaks..Do i need to Simualte 50-100 virtual users and start finding the memory leaks with JvisualVM or working with a single user would do ?

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How To Keep Character In Place With Up And Down To Move

Jan 30, 2014

I noticed it is a huge success to have the backgrounds of games move and the character just move up and down and dodge obstacles.How Do I make a background that scrolls horizontally to the left? I know how to keep the character in place with up and down to move, but not sure how to go about making the background move with obstacles.

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How To Use Events In Place Of For Loop

Jun 30, 2014

I have two questions:

1. I read somewhere that instead of looping through every player (below), you use could Events to do it for you:

for (Player player : this.getPlayers()) {
if (player.getLocation().getX() == 10) {
}
}

I'm not sure as to how to use Events in place of a for loop. I've been thinking on this for days, but I'm still stuck. Any example of using an Event instead of a for loop?

2. Is there any way to accept multiple connections on a server without using a while loop? Maybe use Events to handle the acceptance of connections?

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Enable MD2 Algorithm Only For A Particular Place And Not For Whole JVM

Jun 6, 2014

Is it possible to enable & disable "jdk.certpath.disabledAlgorithms" property programmatically. I want to remove all disabled Algorithms for some time and later I will enable it.

Or is it possible to enable only for a particular place & not in a JVM level. I want that Algorithm need to be enabled for a piece of code, but I don't want it to the remaining part of the application.

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Output In Columns

Mar 1, 2014

Any way i can format this output into columns?

for(int i = 0; i < 5; i++) {
System.out.println(t[i]+n[i]+s[i]);
}

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Dice Roll GUI - Where To Place Constructor

Feb 17, 2014

I am making a Dice Roll GUI and I have most of it down and I only need this constructor to work for the program to work (I think). I don't know where to place the constructor, I tried placing it around the RollButton class but it still didn't work and gave me java error constructor in class cannot be applied to given types

Here's my constructor:

private JPanel panel;
public RollButton(JPanel panel){
this.panel = panel;
}

Here's my code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.Random;
import javax.imageio.ImageIO;

[code]....

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How To Display Decimal Place With 100 Digits

Apr 21, 2015

I am currently trying to solve a programming problem on this site, and the problem includes working on a 100 digits of decimal places of a certain irrational number. I tried using BigDecimal class but it displays, correctly me if I am wrong, just 20+ decimal digits. Is there other way to do this?

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Converting Double Value To A 2 Decimal Place Value

Jan 28, 2015

I am trying to convert the double grossPay to 2 decimal places but cannot get it to work ,I am unsure of the correct way of doing this but this is how far I can get

public static double grossPay(double Orate, double overtime, double salary) {
double grosspay = 0;
grosspay = (Orate * overtime) + (salary / 26);
DecimalFormat df = new DecimalFormat("#.##");
return(df.format(grosspay));
}//closes grossPay method

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Standard Deviation - Round To 10s Place

Dec 2, 2014

for standard deviation my output is not rounded to the 10's place, how can I make it round to the 10's place. Here is my code.

import java.util.*;
public class chapter7 {
public static final int Max_Number_Scores = 100;
public static int fillArray(double[] scores) {
System.out.print("You entered ");
for (int i = 0; i < scores.length; i++) {
System.out.print(scores[i] + " ");

[code]....

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Writing In Different Columns With OpenCSV?

Mar 13, 2015

I'm using opencsv and I want to write two arrays into a csv file and each array should be in a column. For example:

Column1 Column2
2423542 2332332
5242324 4343434
4242352 7565656
4343434 6565656
public class Writer {

[Code] ....

With my code the arrays are all in one column. What do I have to change that my output will be in two columns?

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JSF :: Can Place Content In Xhtml To Get Desired View

Apr 3, 2014

I have 2 JSF applications - Let me say A and B.

Application A uses JSP and Application B uses XHTML.

Now, I want Application B also get the same look and feel as Application A.

For this purpose, I have to recode the complete JSP page (of Application A) into XHTML (in Application B).

My question: Is there any better way, like reusing all the content of JSP in XHTML or something like that.

Could I replace the existing XHTML content with the JSP content with some minor modifications?

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Will Initialization Of HashMap On Different Place Make Any Difference

Nov 21, 2014

public class HashMapTest {
private static HashMap mp;
public static void main(String[] args) {
// TODO Auto-generated method stub
mp=new HashMap<String, String>();
}
}

This is My Code if I create Object in two place
1)Outside main() method but within class.
2)Inside main() method like above

Will these two approach makes any difference ?

I am asking a general senerio for creating any Type of Objects Primitives or References?

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Unable To Get Value Out Of Double - It Only Extends To One Decimal Place

Oct 3, 2014

I'm not sure why, but whenever I try to get a value out of a double, it only extends to one decimal place. For instance, (825 / 805) would become 1.0000 (after being run through a DecimalFormat object) instead of 1.0248 like I need it to be (and should be if what I know about primitive variable types is right). Why is the double variable type not giving me the precision I want and, more importantly, how do I fix this?

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Shuffling Array Is Putting Same Integer In More Than One Place

Sep 11, 2014

I have to shuffle a deck (array) of 52 integers but I started with 3 for testing if it was an even shuffle and it will place the same integer in more than one spot in the random array. I'm not sure what I'm doing wrong...

import java.util.Random;
public class shuffleDeck {
public static void main(String[] args) {
int[] Deck = new int[3];
for (int i=0; i<3; i++) {

[Code] ....

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Rounding Integers To Nearest Tens Place

Feb 7, 2015

I need to round my variables to the nearest "tens" place and I'm having trouble doing so. Every time I run the program it comes back with a number ending in .0 even if its something like 11 / 3. How can I fix this?

public static void results(int game, int totalGuess, int best) {
double avg = Math.round((totalGuess / game) * 10.0) / 10.0;

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Adding Rows And Columns In A Matrix?

Apr 16, 2015

I have a 5x5 array of which I read from an external file and I am supposed to print out the original matrix and then add up each row and column, proceeding to store them into the sixth positions in my matrix. After that I print out the new matrix.

For example this just using a 2 by 2,

Original
1 2 3 4 5
1 2 3 4 5
New 3 by 3
1 2 3 4 5 15
1 2 3 4 5 15
2 4 6 8 10 30

I am confused as to how to isolate rows and print them out. I know how to add the entire matrix up but isolation is my issue.

Here is what I have including how to read the matrix and the sum of the whole thing

import java.io.*;
import java.util.*; 
public class prog470cAddingRandC {
public static void main (String [] args) {
//read the file
Scanner inFile=null;

[code].....

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Summing Columns And Displaying Array

Apr 24, 2015

public static void displayOutputs (int[][] anArray) {
System.out.println("Here is your 2Dim array:");
for (int i = 0; i < anArray.length; i++) {
System.out.println(Arrays.deepToString(anArray));
}
}

This is my code and I get this as a result when I input 10,20,30,...,90 into array[0][0], array[0][1], ..., array[2][2] (3rows, 3columns array)

[[10, 20, 30], [40, 50, 60], [70, 80, 90]]

[[10, 20, 30], [40, 50, 60], [70, 80, 90]]

[[10, 20, 30], [40, 50, 60], [70, 80, 90]]

While I expect to get only

[10, 20, 30]

[40, 50, 60]

[70, 80, 90]

I get no errors at least when I have the same # of rows and # of columns. However, when I have more columns than rows, a compiler stops running when it runs columnSum method.Here's an error message.

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
at lab10.Array2DMethods.columnSum(Arrays2DDemo.java:70)
at lab10.Arrays2DDemo.main(Arrays2DDemo.java:111)
Java Result: 1

And here's my code

public static void columnSum (int[][] anArray) {
int sum =0;
for (int col=0; col < anArray.length; col++) {
sum=0;
for (int r = 0; r < anArray[col].length; r++ ){
sum += anArray[r][col];
}
System.out.println("Sum of column " + col + " = " + sum);
}
}

why my code doesn't work when I have more columns.

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