Variable Name From Table Value?

Apr 17, 2014

How can I make variable from table value? Example:

Java Code:

String table [] = {"vara","varb"};
for(int i = 0; i < table.length; i++)
{
int table[i] = i;
} mh_sh_highlight_all('java');
And vara = 0, varb = 1 here.

Is this even possible?

View Replies


ADVERTISEMENT

Storing Multiple Rows Of Table In Java Variable

Feb 3, 2014

Can I store multiple rows of a table in a two dimensional string array in java.. The table has 3 columns and approximately 10,000 rows.. Some pointers for coding to achieve this...

View Replies View Related

Swing/AWT/SWT :: Passing Data Through Globally Created Table Variable?

Jun 14, 2014

I have created a DefaultTableModel tablel as a Global variable. The table is then created and attached to a Grid bag layout. Then I want to call the table again in another method to add rows of data into it. Hopefully that makes sense.

So the addrow for the table is located in the final method private class CalcButtonListener implements ActionListener

When I debug the code, deftablemodel variable is carrying NULL data.

Also to make things even more complicated, The actual headers for the table aren't showing up,... not entirely sure why though.

import java.awt.BorderLayout;
import javax.swing.*;
import java.awt.event.*;
import java.awt.Dimension;
import javax.swing.JOptionPane;
import javax.swing.JMenuBar;

[code]....

View Replies View Related

JavaFX 2.0 :: How To Define Cell In The Table By Table Event

Mar 23, 2015

How to define Cell in the table by table event?
 
I need to process one component drag to the table. I misunderstand, how I can see to which Cell fall the component. I tried to use Event and Mouse event handlers in my custom Cell, but they do not work. I can copy the drag event to the table and table handles it, but how to get needed Cell I cant understand.

View Replies View Related

Adding Data In Table But The Table Is In Another Frame

Mar 13, 2014

This is my codes in a button that if I click it . that information will send to Jtable but the problem is the jtable is in another frame so how can i connect this ?

DefaultTableModel model = (DefaultTableModel)
new admin().tableBagtags.getModel();
if (txtName.getText().equals("")) {
JOptionPane.showMessageDialog(null, "Please fill out all fields.", "Error!", JOptionPane.ERROR_MESSAGE);

[Code] .....

View Replies View Related

JSF :: Unable To Add Mysql Table Columns To Table

Apr 29, 2014

I'm trying to add some mysql table columns to JSF table. And I'm getting error:

/index.xhtml: The class 'logon.User' does not have the property 'description'.

User.java
package logon;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

[Code]...

View Replies View Related

Difference In Variable Assignment Between Constructor And Variable Section

May 21, 2014

Given the case I have an object which is assigned only once. What is the difference in doing:

public class MyClass {
private MyObj obj = new MyObj("Hello world");

private MyClass(){}
//...
}

and

public class MyClass {
private MyObj obj;
private MyClass(){
obj = new MyObj("Hello world");
}
//...
}

Is there a difference in performance or usability? (Given also the case there are no static calls expected) ....

View Replies View Related

Are Terms Local Variable And Member Variable Comparable

Oct 27, 2014

The term "Local variable" is related to scope. That is a local variable is one which is defined in a certain block of code, and its scope is confined inside that block of code.And a "Member variable" is simple an instance variable.

I read in a discussion forum that when local variables are declared (example code below), their name reservation takes place in memory but they are not automatically initialized to anything. On the other hand, when member variables are declared, they are automatically initialized to null by default.

Java Code: public void myFunction () {
int [] myInt; // A local, member variable (because "static" keyword is not there) declared
} mh_sh_highlight_all('java');

So it seems that they are comparing local variables and member variables. While I think a member variable can also be be local in a block of code, isn't it?

View Replies View Related

Reference Variable - Create Another Variable And Set It Equal To First

Jan 11, 2015

Given a reference variable : Car c1 = new Car();

when we create another variable and set it equal to the first : Car c2 = c1;

we're pointing c2 at the same car object that c1 points to (as opposed to pointing c2 at c1, which in turn points at the car). So if we have code like,

Car c1 = new Car();
Car[] cA = {c1, c1, c1, c1};

are we doing the same? Are we creating four *new* reference variables, each of which points at the same car (again as opposed to pointing them at c1 itself)? I think so, but want to make sure I'm understanding this correctly.

View Replies View Related

How To Use Value Of String Variable Cel1 As Variable Name

May 23, 2014

I have a JFrame jf and JPanel jp on it. jp has five TextFields named cel1, cel2.. cel5. I wish to construct a String Cel + for loop index and run a for loop to reset the values of all the text fields using a single statement such as cel1.SetText("abc"). Similar things can be done in foxfro. How does one do it in java?

View Replies View Related

Table Won't Go Past 10

Apr 26, 2015

I am trying to make a square root table from 0 to 20, but for some reason, mine is only going to 10.

public static void main(String[] args) {
System.out.println("Number SquareRoot");
double table[]={0,2,4,6,8,10,12,14,16,18,20};
for(int counter=0;counter<table.length;counter+=2) {
System.out.println(counter + " " + Math.sqrt(counter));
}
}

View Replies View Related

Creating A Table

Feb 17, 2015

creating a table, and this is the code that I go down so far:

import java.util.Scanner;
public class program1 {
public static void main(String[] args)
{
String heading1 = "Quiz 1";
String heading2 = "Quiz 2";
String heading3 = "Test 1";

[code]...

View Replies View Related

Returning Values From Table?

Apr 6, 2015

This simple program should build a new table with random values and on the getValue method (perhaps called from othe TestClass) return back content of particular cell. why my getValue method doesn't work. Nay! It returns error while compilation.

import java.util.Random;
class TablicaIntowa{
public int getValue(int a){
return tabl[a];
} //getValue method end

[Code]....

View Replies View Related

Adding Numbers In Table?

Mar 11, 2014

how can I add the numbers in quantity where it will automatically put in total?

im using netbeans.

just want the codes for how to add the listed quantity?

View Replies View Related

How To Determine Size Of Table

Jul 6, 2014

Can be :

results = null;
results = new double[2];
results = new double[50];
results = new double[100];

How determine size of this table : System.out.println("table size=",???);

View Replies View Related

EJB / EE :: Update Same Table From Different Applications?

Feb 18, 2014

I have two separate applications who will access the same table in a database and the two application will update the table.

How can I make sure the integrity of accessing this table? Is it in the code or in the database level?

View Replies View Related

JSP :: Insert Into Table Query

Feb 18, 2014

i found some problem for this jsp code. Actually I'm new in jsp. I'm trying to insert some data in a sql table in jsp by user input. Here's my code but i couldn't completed it.

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.sql.*" %>%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

[Code] ....

View Replies View Related

JSF :: Nested Table Without Using Datatable

Apr 11, 2014

Need to create a nested table without using datatable. I am using jsp and jsf but using datatable is not allowed.

View Replies View Related

Get All Access Table Names?

Jul 12, 2014

I'm using MS Access database. What I want to do, is to get all names of my tables in database.My SQL query :

SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES

is it correct? I found it in one example and didn't change anything.

I could of course execute this and check, but the problem is, that it returns ResultSet(I'm using Java), and I do not know how to manipulate this object in this situation.Cause usually ResultSet contains columns and rows, I think now I should get only bunch of String values.

View Replies View Related

ResultSet Only Pulls Out Last Row Of The Table

Aug 6, 2014

Ok here i am trying to pull out all the items in my Product table but all it does it last the row in the table. I have tried using do while but it still does not retrieve the information

Here the the Bean

public class Pageitem {
private int id;
private String name;
private double price;
private String description;
private Date modifyDate;
private int category;}//Has getter Setters and ToString methods for the items

[Code] .....

View Replies View Related

Remove Item From Table?

Jul 11, 2014

I'm trying to make a calendar that, when you click on the date, the result are stored in a map and visualized in a table that refers to a container.

I successfully created the map mechanism, but I have a problem on the list....

I add the rows in this way:

Object newItemId = container.addItem();
Item riga = container.getItem(newItemId);
riga.getItemProperty("Timestamp").setValue(fara);
riga.getItemProperty("Date").setValue(asa);
.
How can I delete a row in the list, when all I have in input is the "Timestamp" information, in a Long value?

BTY, I'm using NetBeans with Vaadin extension

View Replies View Related

How To Display Table From Servlet To JSP

Oct 20, 2014

When I am entering the student name , his/her details should be retrieved from database by servlets and the data to be print in jsp pages this what I want But I am unable to display the data from database in jsp pages .

Sucess.jsp
-----------
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@page import="StudentBean"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"/>/"+request.getServerName()+":"+request.getServerPort()+path+"/";

[code].....

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.47 logs.

Apache Tomcat/7.0.47

View Replies View Related

Horizontal Table Layout

Mar 16, 2015

print my outputs like this?rfrf.jpgI tried but the output always becomes messy and never correct.

import java.io.File;
import java.util.*;
public class AssP
{
public static void main(String[] args )
 
[code].....

View Replies View Related

Trace Table - Use Of Iterators?

Feb 20, 2014

I'm confused on how to provide a trace table with this problem.

int i = 0; int j = 1; int n = 2;
while (i < 10) {i++; n = n + i + j; j++; }

My professor wants us to use iterations as a way to solve it and this was the example given:

int i = 0; int j = 1; int n = 2;
while (i < j) { i ++; j --; n++; }
public static String r43a() {

// START CODE
String answer = "iteration1: i=" + 0 + ", j=" + 1 + ", n=" + 2 ;
answer += "
";
answer += "iteration2: i=" + 1 + ", j=" + 0 + ", n=" + 3 ;
return answer;
// STOP CODE
}

View Replies View Related

How To Make A Table That Prints Out Sin / Cos / Tan For Angles

Sep 30, 2014

I am stuck and having a problem trying to find what i believe is a simple fix but can't wrap my head around it. For class I needed to make a table that prints out Sin,Cos,Tan for angles in steps of 5 to 180. The problem is in my output with the first couple lines of the table. for angle 5.0 the Sin(.0872) Cos(.9962) and Tan (.0875) are being displayed on the angle line 10.0

public class TrigTable {
public static void main(String[] args) {
double angle = 0;
double sin =0;
double cos = 0;
double tan = 0;
 
System.out.println("Angle Sin Cos Tan"); // Table header for the values

[Code] ....

Here is the first couple lines of output:

Angle Sin Cos Tan
----- --- --- ---
0.0 0.0 1.0 0.0
5.0 0.0 1.0 0.0
10.0 0.0872 0.9962 0.0875
15.0 0.1736 0.9848 0.1763
20.0 0.2588 0.9659 0.2679

View Replies View Related

Decision Table Implementation In Java?

Jan 8, 2015

how to start with decision table implementation in java

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved