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] .....
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Apr 20, 2015
I am trying to export a resultset to a csv file but the outputted csv file is blank with 0 bytes.The code I am using is below.
File file = new File(System.getProperty("user.dir")+"avatarDumps"+id+"_"+name+".csv");
try (FileOutputStream fop = new FileOutputStream(file)) {
// if file doesn't exists, then create it
if (!file.exists()) {
file.createNewFile();
}
String query = "SELECT * FROM avatars WHERE id='"+id+"'";
[code]...
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Feb 24, 2015
The below method shows that a JOptionPane should display when the result is null, meaning it has not found what I was trying to look for. However only the if statement that finds the query runs:
public void find(Person person) {
String query = "SELECT * from employee WHERE last LIKE'" + lastName
+ "'";
try {
statement = connection.createStatement();
resultSet = statement.executeQuery(query);
[Code] ....
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Oct 28, 2014
I have a java query like this
query ="Select major_career.Major_Title, career.ISCOTitle,career.FS.... " //only partial,
// I swear the query is correct
resultSet = statement.executeQuery(query); //this executes it
relArr = new ArrayList<String>(); //don't worry it is intialized
In the code below I tried to store the resultset components into the arraylist
int j = 1;
while (resultSet.next()) {
while(j<=numberOfColumns){
relArr.add(resultSet.getObject(j).toString());
j++;
}
} // end while
I am not sure whether the arraylist is able to store the result set because when i try to display it like show below it only shows some rows and only the first column
Iterator it = relArr.iterator();
while (it.hasNext())
{
System.out.println(it.next());
I want to manipulate the resultset results in my program by copying the resultset values to other datastructures.
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Jun 8, 2014
I've been trying to get a handle on how to populate a jtable with data from my resultset and have found out that using DBUtils is probably the easiest method but unfortunately its not working for me at all. The program runs but the jtable remains empty as ever. I don't understand where I'm going wrong with it. I have import net.proteanit.sql.DbUtils; imported at the top and the jar added in class path. Here is my code:
private void jPanel3FocusGained(java.awt.event.FocusEvent evt) {
// TODO add your handling code here:
// JDBC driver name and database URL
String JDBC_DRIVER = "com.mysql.jdbc.Driver";
String DB_URL = "jdbc:mysql://localhost/new";
[Code] .....
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Apr 2, 2014
I have retrieve the data in listbox from my database already and now again i want to select the data from this listbox and query on it , is it possible?
For Ex i have listbox as follows
<h4>Models For Selected Pattern:</h4>
</br>
<select Name="drop_model" multiple="true">
<%
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url,username,userPassword);
Statement stmt = conn.createStatement();
[Code] ....
In this listbox some values are retrieved from database as
<option value="xyz">xyz</option>
<option value="pqr">pqr</option>
<option value="abc">abc</option>
<option value="lmn">lmn</option>
I want to select this values from listbox and query on them....
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Apr 7, 2014
I'm working in a project where a particular part has been assigned to me. I've a ResultSet of informations like below:
EmpId EmpFirstName EmpLastName EmpAge 1 ABC DEF 43 2 PQR XYZ 37
Now I've to send this ResultSet(to another function) with EmpFullName in following manner.
EmpId EmpFirstName EmpLastName EmpFullName EmpAge 1 ABC DEF DEF, ABC 43 2 PQR XYZ XYZ, PQR 37
There is no permission for me that I can change SQL query(or anything like this), and I've to return the modified ResultSet(not TableModel). I googled a lot to implement AbstractResultSet, but no luck for me. How can I achieve this ?
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Mar 27, 2014
I am trying to use a custom class in a .jsp page, as part of a course I am taking on Web Technologies.The original version of the jsp page was working fine, until I moved part of the Java code to a separate class.Here is the original .jsp code that is working:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-GB" xml:lang="en-GB">
<%@page pageEncoding="utf-8" %>
<head>
<meta charset="UTF-8" />
<title>Forum</title>
<link rel="stylesheet" type="text/css" href="stocktails.css" />
</head>
<body>
[code]....
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Jul 7, 2014
It's always good to keep functions smaller and focused on one behavior. So is this safe:
Java Code:
public Unit findBySql(int id){
Unit unit=null;
DbConnectionPool dbPool = DbConnectionPool.getInstance();
HashMap<String, String> conditions = new HashMap<String, String>();
conditions.put("id", String.valueOf(id));
String sql = buildSelect("units", "*", conditions);
[Code] ......
As you can see a pass ResultSet to a function which populates the item. But I also make sure that the ResultSet that the passed object is pointing to is closed, so it doesn't leak resources.
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Aug 15, 2014
I'm want to call another statement within the same resultSet. But it gives an error that the result set is closed.
public static void updateAlarmStatus(int status) {
ResultSet rs = null;
database.restartDatabase();
try {
rs = database
.executeQuery("Select alarmId from alarms where alarmDate = '"
[Code] ....
I googled it and came to know that resultSet is automatically closed if we call another statement within in. I've also tried creating the connection again before the second statement but of no use.
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Mar 15, 2014
I am trying to get resultset into a string and then use split method to store it in an array but it is not working. i tried to work it seperately as java program but it throws exception "could not find or load main class java."
String ar = "This.is.a.split.method";
String[] temp = ar.split(".");
for(int i=0;i<temp.length;i++){
System.out.println(temp[i]);
}
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Mar 12, 2014
I am building an online quiz. I created a database , bean , controller and jsp. I connected database, wrote query , put resultset in arraylist of object and passed it to jsp. My program runs but arraylist size increases everytime and same question get displayed repeatedly . i cant find the error. Everytime i run the program arraylist size increases. I think it is adding same rows again ang again. here is my code for controller and jsp.
servlet code:
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
[Code] .....
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Dec 24, 2014
I have a my result set object which has data as shown by the attached image.What i am trying to do is traverse these results and do certain operations. I want my program to do this, if I
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Jul 18, 2014
I am very new to multithreading thus the code below reeks of ignorance,but i guess thats a place to start from.I am trying to obtain values that are already in my db and send them to a database by creating a new thread as follows:
//ADDED JUL 15 2014 12:07, LISTITEMS SO
public void getList() throws SQLException {
String sql = "select * from PRODUCTS";
out.print(m_Stmt);
ResultSet rs = m_Stmt.executeQuery(sql);
ExecutorService es=Executors.newCachedThreadPool();
es.execute(new Runnable(){
@Override
[code]...
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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.
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Jan 21, 2015
I have observed a strange behaviour from Resultset object. My application fetches 400 records from a table and processes these records every 10secs. By default the resultset has a fetchsize of 10 from the database cursor. As I understand if the query returns 400records, the resultset will fetch 40times, in multiple of 10 to get all these 400 records from database cursor.
Query : SELECT * FROM ( SELECT * FROM TestTable
WHERE STATE_ACTION = 0 ORDER BY ROP_TIME DESC )
WHERE ROWNUM <= 250
Observation : Under a normal operation, the resultset fetches all the 400 records on query execution from database cursor, but under unknown conditions the same resultset object fetches only 10 records from the database cursor and exits. Please refer page 297 in document below for the result fetch size details. JDBC developer guide for oracle 10g : [URL] .... This condition self-heals itself in few hours or restarting the database or restarting the server. The root cause of this behavior is unknown.
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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] .....
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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]...
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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?
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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));
}
}
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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]...
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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]....
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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?
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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=",???);
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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?
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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] ....
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