I want to show the number of rows that is available in the table from my MySQL table. The thing is, im doing a music system database thingy and i want to show how much songs there is in the database in my GUI ie through a jTextField.
View RepliesI am having a problem with a PreparedStatement for a MySQL query, where the query seems to get cut off. I can't really post a self contained example, because it involves an SQL database.The part of the code with the problem...
Java Code:
public void insertEntry(
Hashtable<String, String> strings,
Hashtable<String, Integer> integers,
Date created, Date paid, boolean enabled)
throws ClassNotFoundException, SQLException {
Class.forName("com.mysql.jdbc.Driver");
[code]....
The output of the whole program, though all it has done so far is create some default values and attempt to insert them with the above code, where the problem occurs.
Debug: SQLpaid = 1990-03-21
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorEx ception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT enabled=0, username='default_username', created='2000-03-21', paid='1990-' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(DelegatingConstructorAccessorImpl.java:45)
[code]....
How could i populate jcombobox2 from MySQL depending upon the value of jcombobox1??
View Replies View RelatedI want the text that the user inputs into the JTextField in the user input panel to be what shows up in the JTextField in the totals panel.
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Scanner;
import javax.swing.*;
import javax.swing.border.TitledBorder;
[Code] ......
I know that I will need to take advantage of the get and set methods, could I get an example of this? How to write the code.
i want to make adding into mysql database and then when i click adds, jtable show those data automatically. but it seem to get error at display part, it shows " Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Uncompilable source code - illegal start of expression" and jtable do not show the added data but in mysql, data is properly kept.
private void jtPropertyChange(java.beans.PropertyChangeEvent evt) {
DefaultTableModel model = (DefaultTableModel) jt.getModel();
try {
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection(url, user, password);
String sql = "SELECT * FROM `companya`";
[Code].....
the adding part seems to be fine
There is a Jlist(Jlist1) which is populated with the columnNames from MYSQL. Then There is another empty Jlist (Jlist2) which the user can add items from Jlist1. At this stage I want to know how I can select items of JList2 from MYSQL to show in Jtable. Because the columnnames(items) of Jlist2 is less than the Jlist1. Like Spss that when you select variables from available list then you can add some of variable to selected list and do analysis.
View Replies View RelatedI have an array with the following characters {'E', 'L','E','P','H','A','N','T','P','O'}
now, I need an array that will store the first array such that only the occurence occurs e.g {'E','L','P','H','A','N','T','O'} Notice that the characters 'E' and 'P' occur twice and as a result were not repeated the second time in the new array.
How would one go about this using the counting elements technique?
I tried this but not sure how to use the counting elements technique.
char [] arr = new char{'E', 'L','E','P','H','A','N','T','P','O'};
char[] bucket = new char[(arr[0] * arr.length)];
for (int i = 0; i < len; i++)
bucket[arr[i]]++;
I have the following code.
class A {
List<StringBuilder> list;
public void output(List<StringBuilder> objectToOutput){
try(BufferedWriter bw = new BufferedWriter(new FileWriter("temp.txt"))){
for(StringBuilder row:objectToOutput) bw.write(row.toString());
}catch(IOException e){}
[code]....
Why don't the a's show up on the console? I put them in as part of the debugging process and now I don't understand why they don't show up in both places.
how this query string will be prnted it is not showing me the psid values.
<tr bgcolor="pink" >
<td><%=resultSet.getString("FirstName") %></td>
<td><%=resultSet.getString("LastName") %></td>
<td><%=resultSet.getString("Username") %></td>
<td><%=resultSet.getString("Password") %></td>
<td><%=resultSet.getInt("Psid")%></td>
<td><a href="Edit.jsp?psid="<%=resultSet.getInt("Psid")%>>Edit</a></td>
<td><a href="Delete.jsp">Delete</a></td>
</tr>
i am doing a code using JSTL to fire a query. everything come fine except the resule is not sorted as desired. i am putting the code below--
String sort_order=(String)request.getAttribute("sort_order");
request.setAttribute("sort_order",sort_order);
<sql:query var="viewQueryj" sql= "select USER_ID, PERMISSION_ID, USER_NAME from administrator order by ?">
<sql:param value="${sort_order}"/>
</sql:query>
now the resule is always sorted by USER_ID. if i want to sort it using USER_NAME i pass parameter from controller to this page in sort_oredr variable which comes fine but the result doesn't sort by name, only by id. if i hardcode USER_NAME in query then the result is as desired.
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] ....
I have done 90% of the coding however i am stuck with producing the output, i just cant get the user fields to show.
I have attached a picture of the output that is required. The program consists of two classes i have attached the database class, and have inserted my coding below.
import java.sql.*;
import java.io.*;
import java.util.*;
public class QueryDB {
private Connection con = null;
String userID,
[Code] ...
Attached image(s)
I seem to be having a issue with my java console app what it should do is query a SQL DB and list the user details (userid, firstname ,lastname) from the user table, and the users stocks (stockname ,stockdiscription) associated to each user from the userstocks table if I'm thinking correctly!
I'm sure it is just a logical error, but I'm not sure of the way to get the out put I'm looking for. I will add the makeDB.java file and DatabaseQuery.java file as well as the current Exception(Run Time Exception) below.
**I have added other users and stocks manually - Not just what the MakeDB.java file inserts **
Output and Exception:
Stock holdings by User
User ID User Name
Stock - Description
-------------------------------------------
admin01 Default Admin
Exception in thread "main" java.sql.SQLException: ResultSet is closed
at sun.jdbc.odbc.JdbcOdbcResultSet.checkOpen(JdbcOdbcResultSet.java:6647
)
at sun.jdbc.odbc.JdbcOdbcResultSet.next(JdbcOdbcResultSet.java:1248)
at DatabaseQuery.main(DatabaseQuery.java:45)
Press any key to continue . . .
Java Code:
MakeDB.java:
import java.sql.*;
import java.io.*;
public class MakeDB
{
public static void main(String[]args) throws Exception
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
[Code] ....
I have to get my output to show as per the image attached i am very close but not there yet. I have also attached the database where i extract my information from
/*
Program Name: QueryDBDB.java
Purpose: to build an initial database for the stocktrakcer application
*/
import java.sql.*;
import java.io.*;
import java.util.*;
public class QueryDB
{
private Connection con = null;
String userID,firstName,lastName,name,symbol;
public QueryDB() throws Exception
[Code] .....
Attached image(s)
How do i make the 'date' column show only the date and 'timeIn' and 'timeOut' column only show the time. In my database table my 'date' column is a date type and 'timeIn' and 'timeOut' column is time.
View Replies View RelatedI have a Stock Database query class, it compiles and runs well. Thing is when i enter a user, it shows a user stock information but it repeats showing the same user in the command prompt. the repetition is so fast, you can't see the information. All i wanted was the application to show a user's info, then asks you to enter another user again and so forth. Here is the code
import java.io.*;
import java.sql.*;
import java.util.*;
public class StockDatabaseQuery {
public static void main(String[] args)throws Exception {
String userID;
String firstName;
[Code] ....
My console SQL Query app is not giving me the desired output.I am sure its might have something to do with my SQL Query.Its missing the description of the stock items and it prints a new line for each user as per number of stocks an repeats the user details and then prints the stock listed by that user(only want the user listed once with all its stocks). I will add my files and current output and desired out put below.
MakeDB.java:
import java.sql.*;
import java.io.*;
public class MakeDB
{
public static void main(String[]args) throws Exception
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:StockTracker";
[Code] .....
I have code which query value from database, the use case is the user can enter value as 1,01,11 in database but when the user enter value in xml file he can only enter 11,01,12 in database there is two columns lets say column test1=1 and test2=2 combination of this is 12, which is the value the use will enter in xml, but sometime the use can enter test1=04 than column test2=00 how can i approach this
I got table called card with column crdind,crdpos1,cardpos2 as primary key. The user can enter value as
crdind=1
crdpos1=5
crdpos2=3
inactivedate=2013-05-24
activedate=null
another row
crdind=1
crdpos1=5
crdpos2=5
inactivedate=2013-05-24
activedate=null
another row
crdind=6
crdpos1=02
crdpos2=00
inactivedate=2013-05-24
activedate=null
The rule say if you enter one number in crdpos1 eg 2 than you must enter value in crdpos2 it can be any number 1-9 but if you enter 00-09 in crdpos1 than crdpos2 is 00
The challenge I have is to query this value after they been enter. I have xml file which got field crdpos the use enter 15 which is the combination of column crdpos1=1 and crdpos2=5 ... How can I split the value crdpos and got and able to query in database in two separate column ....
In my JSP I need to retrieve some data from MySQL. I need to assign a "email" variable to the "WHERE" clause. The variable is retrieved from the session attribute. So far, I have this code:
<sql:query dataSource="${user}" var="result">
SELECT * from users where email = ${sessionScope.email};
</sql:query>
It doesn't work.
My code is as follows:
import java.util.Scanner;
public class GetUserInput {
public static void main (String args[]) {
int i;
float f ;
String s;
[code]....
My Query is: input.nextLine() does not wait for user input. Instead it continues execution from next line. But if I move up input.nextLine(); before both input.nextInt(); and input.nextFloat() in the above code, the execution works fine, input.nextLine(); waits for user input. edited code and output are as follows.
import java.util.Scanner;
public class GetUserInput {
public static void main (String args[]) {
int i;
float f ;
String s;
[code]....
My output of my app its outputting the correct data just no the format ...
code :
DatabaseQuery.java :
import java.io.*;
import java.sql.*;
import java.util.*;
public class DatabaseQuery
[Code] ....
Current output:
Stock holdings by User
User ID User Name
Stock - Description
-------------------------------------------
admin01
Default Admin
DELL Dell Computer Corp
admin01
Default Admin
MSFT Microsoft Computer Corp
[Code] ....
Desired Output :
Stock holdings by User
User ID User Name
Stock - Description
-------------------------------------------
admin01 Default Admin
DELL Dell Computer Corp
MSFT Microsoft Computer Corp
ORCL Oracle Corp
[Code] .....
I want to store sql query in tree format in xml file.I wrote a code which split the code into different tokens and store it in xml file.I am storing keywords like "select",from,where etc as xmlelements and the values of these keywords as textnodes inside corresponding elements.When the query contains single single statement it works as i need.but when nested query occurs i want to store the nested query inside "where" element.In that case the code didn't works properly.I am hereby attaching the code. When i try to store the xmldata in "CreateFiles.xml" file ,the file is not displaying in the corresponding folder.what is the reason for that?
CreateXml.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package querywork;
import java.io.File;
import java.io.StringReader;
import java.io.StringWriter;
[Code]...
I have embed a query in the JAVA to retrieve the data from the back end and I use Oracle for back end. What I'm trying to do is in my query has been shown below. The issue here is that result set returns the NULL. But fine when I change the query "SELECT 5 FROM DUAL" and it returns 5 for me which right. When I try to run the same at the back end as a query I'm getting proper result.
public String getReturnPart(String partNumberIn) {
//int returnPartNumber = 0;
String query =
"SELECT COUNT(*) AS CHECK1 FROM PART_MASTER PM,UNITS_OF_MEASURE UOM WHERE PM.PART_NUMBER = '" + partNumberIn
+ "' AND PM.UNIT_OF_ISSUE = UOM.UNIT_OF_MEASURE AND UOM.UNIT_TYPE = 0 ";
//String query = "SELECT 5 AS CHECK1 FROM DUAL"; This returns fine as "5"
ResultSet result = null;
[Code] ....
I have a mySql table of PROJECTS, which I am displaying as a list in the index.xhtml. The projectid column contains hyperlinks. When they're clicked I would like the specific projectid row selected to be passed as the query argument into another jsf file (ListProjects.xhtml) which displays all the project values referring to the projectid selected in the index.xhtml. The named query is:
@NamedQuery(name = "Projects.findByProjectid", query = "SELECT p FROM Projects p WHERE p.projectid = :projectid")
index.xhtml
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
[Code] ....
I get the following stack trace. How to correctly pass the hyperlink parameters.
org.jboss.weld.exceptions.WeldException: WELD-000049 Unable to invoke public void com.manaar.beans.SelProjectMgtBean.init() on com.manaar.beans.SelProjectMgtBean@681859ae
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:91)
[Code] ....
How do I escape the characters of a primefaces editor?
I have this in form in a xhtml page
<p:editor value="#{managebeanX.valor}" />
but when I try to save this value through a sparql query it says:
virtuoso.jdbc4.VirtuosoException: SQ074: Line 2: SP030: SPARQL compiler, line 2: syntax error at 'Apple' before '-'
Here is the sparql query
INSERT INTO GRAPH <http://localhost:8890/Asst> {
<http://www.dominio.edu#Q1> rdf:type asst:Question; asst:prompt "adada <span class="Apple-tab-span" style="white-space:pre"></span>"^^xsd:string. }
The Blue text is the value of the p:editor. It' has html characters... So I think I need to scape those characters... but how?
My query retrieves more than 5000 records from Oracle database. I want to display the records 100 per page. I know it is called pagination. Any detailed styp-by-guide or tutorial or example available?
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