Fetching Rows From 2 Tables Using HQL
Sep 29, 2014Using HQL I am fetching the rows , now i need to iterate through the list and convert each row in the list to a "string" and append the string to a buffer.... How to do it
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Enterprise JavaBeans :: JPA With 3 Tables - Evaluate Query By Joining 2 Tables And Update Results In 3rd Table
Nov 8, 2013I have 2 tables on 1 database
Table A, Table B
I need to evaluate a query by joining these 2 tables and then update the results in the 3rd table in another database. I need to use stateless session bean using JPA I believe. I need 3 Entities for each of the tables here.
JSP :: Fetching Record On Button Click
Apr 22, 2014I am working on web project in java. i have taken buttons in column..and projects is my column..when i click on a button in first row ,i want fetch all information about selected project....so how can i do that?
View Replies View RelatedJDBC :: Oracle Driver Hangs When Fetching Row
Nov 7, 2014We have a java application in our production enviroment using Spring framework which is configured with DBCP connection pool and the backend is Oracle database( version 11.2.0.3). Recently we encountered an occasionally happened situation(about once every week) and can be described as below:
The application schedules a task that runs every 10 minutes. And during task execution, the application would issue a SQL query of which the result is expected to be got within 10 seconds. At 11:51 a.m Oct 13th, however, the application failed to get the result within expected time, and 2 hours later, at 13:51, the result was finally returned to application. Due to lack of information at that time, we were not able to reproduce the same problem in test environment. At 15:31 p.m, Oct 29th, it happend again and this time we grasped all the information including thread dump and Oracle diagnostic information. We could found that:
1. Through oracle v$sql view, we could find that the SQL query is executed twice, at 15:31 and 17:31 respectively.
2. By analyzing TCP packets provided by network monitoring tools, it can be concluded that the request TCP packet containing SQL statement had been sent to Oracle and get executed, but after that JDBC only fetched first 80000 records out of 90000 records in total and then it stopped, didn't send any more request to Oracle to fetch rows. 2 hours later, Oracle sent a TCP keep alive packet and JDBC driver resume fetching remaining rows using the same connection(which can be confirmed by comparing source port of packets).
3. We dumped the thread at which JDBC hangs at socket read of JDBC driver
By the way, the version of JDBC we use is 11.2.0.1 and JDK version is 1.5.0_22.
The SQL statement is very simple:
select sum(n.netvalue) npvi,
n.HISCENEID hsid,
n.counterpartyid cid,
n.productid pid,
n.opendays
[Code] .....
Tables In Java
Mar 22, 2015We started learning about tables and have a little program. The teacher gave us an excercise and doesn't works (not running), I receive too many errors. So any simple java program with tables with 20 numbers, that is giving random numbers?
View Replies View RelatedJSP :: How To Delete And Insert Data Into Two Different Tables
Jun 2, 2014I am creating a portal using JSP and MySQL with eclipse IDE. I have a scenario where data is stored on draft table and is retrieved then stored on another table. I need the entry in the draft table to be deleted after the insertion. When I tried to run the code it redirects to success page but makes no impact on database(neither inserts not gets deleted).
<%@ page import="java.sql.*" %>
<%@ page import = "java.util.Date,java.text.SimpleDateFormat,java.text.ParseException"%>
<html>
<head>
<title>JSP Processing</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
[code]....
Formatting Tables For Console Output?
Apr 13, 2014I am writing a class which formats console output as a table. It displays the type of an entry, the name of an entry, and the data for an entry. I am stuck on a required for loop which appends a tab character to a string, for formatting it as a table. It doesn't seem to be adding any of the tabs and I can't tell what I've done wrong. As far as I can tell the contents of the loop are never reached, and I can't make sense of it.
The ConsoleWriter class that contains the code that is in error...
Java Code:
package frontend;
public class ConsoleWriter {
private static String tabbedData(String data, int min) {
System.out.println(); //for debug
int tabcount = 0;
int len=8*min;
[code]....
How To Create Sports Tables Java Applet
Jun 1, 2014I've been using a Java applet for sports tables.It has been very useful for me. However, the recent developments from the people at Oracle have made this program impossible to use. The point is that I need this program and I need it fast.I've been in touch with the person who once created this applet and he has no intentions at all to upgrade it or do anything to make it function. How to make the program works with their new updates.
View Replies View RelatedRetrieve Data From Database By Joining Tables
Dec 23, 2014I am trying to retrieve data from my database by joining my tables. So far i have managed to join my four tables in my database and retrieve all the information in that table. Now what i want to do is create a prepared statement in java that allows me to retreive certain data. Here is my joining query.
SELECT student.idNumber,student.names, student.surname,
course.description,
coursemarks.mark,
class.form,class.id
FROM `student`
LEFT JOIN `coursemarks` on student.idNumber = coursemarks.studentid
LEFT JOIN `course` on course.courseid = coursemarks.courseid
LEFT JOIN `class`on student.idNumber = class.studentID;
What I want is to select all the data depending on the class passed and the form passed, e.g a person might decide to select a certain form only or a certain form and class
Spell Checker Using Hash Tables Not Working
Feb 10, 2014I am trying to use this program for reference but its not working ...
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May 22, 2014I have a requirement like in a Rich datatable, and i have placed two links up and down in one of the column of each row, here i wanted to swap rows (move up/ down ) the rows when i click the link on a perticular row. is it possible with jsf/ java script?
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Mar 12, 2014how to insert multiple rows in a database..i want to insert multiple rows but this can happen when i hit the submit button once. i use j2ee and db is postgresql.
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View Replies View RelatedAdding Rows And Columns In A Matrix?
Apr 16, 2015I 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].....
Find Number Of Rows In CSV File
Feb 13, 2014I am working through a text and I am supposed to complete the following tasks.
Your ReadFiles.java class requires the following methods:
Method: check to see if the file exists
Method: find number of rows in csv file
Method: Converts the csv file to a mutli-dimensional array
Method: PrintArray
Method: Return array using a get method
Create a file DataAnalyzer.java. This file will be used to call the methods in ReadFiles.java. Be sure to demonstrate that all of your methods work through DataAnalyzer.java.
The problem is that it does not really provide any information on how to go about reading a file into an array. I am stuck at the third task of converting the file to an array and I have tried several ways to do this unsuccessfully. I thought that I would at least try to get things to print out (line 87) to see if I could get that to work, but all that prints in null over and over again.
Java Code:
public class DataAnalyzer {
public static void main (String[] args) {
ReadFiles aReadFiles = new ReadFiles();
aReadFiles.fileCheck();
aReadFiles.findRows();
aReadFiles.convertFile();
[Code] .....
Multiple Rows Into Database From JTable
Apr 12, 2014How to insert multiple rows into a database from a jtable and also retrive the same details from database and show it in a jtable.
View Replies View RelatedNested FOR Loops For Rows And Columns
Apr 21, 2014I need to write a class,that will give me output like this:
*
***
****
***
*
I have to use for loop,i know that i have to use nested for loops, for rows and columns. I just cant figure it out the thing with spaces,and how to turn it to count back.
How To Get Arrays Which Are Rows In Game To Printout
Jan 18, 2015For our final project we're making a game. I'm "trying" to do battleship in 2D, but its not going well. at all. I've started it but how to get the arrays which are my rows in the game to printout, and i need to put them into a seperate method and all them.
Scanner input = new Scanner(System.in);
String userN;
String B1;
String H1;
H1 = "onethree";
[code]....
JDBC :: BatchUpdate Rows Affected Is Always -2
Mar 27, 2015I have a batch process which does Bulk UPDATE statement.
After implementing batch support using Spring JDBC 4.1.6 and Oracle Jdbc Driver (ojdbc7 and ucp), the number of records affected for individual update requests (in the batch) are always retrieved as -2 (Statement.SUCCESS_NO_INFO).
Is there any way to know the rows affected for individual cases, as I have to retry the same argument with an INSERT statement after this. Technically trying to develop this as an UPSERT implementation
I tried this batch update in Three Different Ways, and in all three methods the results are same -- (It just tells me Statement.SUCCESS_NO_INFO (-2) )
Method 1 -- Direct UCP Connection and PreparedStatement
connectionPoolMgr.startConnectionPool("mgr_pool");
Connection connection = pds.getConnection();
PreparedStatement pstmt = connection.prepareStatement(dmlSQL);
pstmt.setInt(1, pkId);
pstmt.setInt(2, idx * 10);
pstmt.addBatch();
[Code] .....
Rows And Columns In The Form Of Multiplication Table?
Mar 12, 2014I am making rows and columns in the form of a multiplication table, listed below is my code:
package assignments;
public class MultTable {
public static void main (String [] args) {
int row, column, x, y;
for(row = 0; row < 8; row++)
[Code] .....
If you see my sample run you can see that I have the multiplication table down but, I haven't completed it. I have to make the bottom left half of the whole table blank somehow. For example, I have to make it halfway through the middle of the table the bottom left half full of white space...
5 6 7 8 9
12 14 16 18
21 24 27
32 36
90
hm, it's supposed to be the other way around horizontally.
Servlets :: Retrieve Complete Rows Of Table Using JSP
May 8, 2014I have one table in mysql in that some rows are there i want to retrieve all rows using servlet and jsp concept and i have done half of the way but not getting output it is showing some info and nothing getting printed on page except columns heading and here is my bean class..
public class TimeDetailBean {
private Time intime;
private Time outtime;
private Date date;
private String eid;
public Time getInTime() {
return intime;
[Code] .....
JSP :: Best Way To Retrieve Thousand Rows From Database For Encoding?
Mar 6, 2015I have to create a webpage such that there is an 'import' and 'save' button.
When the user clicks import button, it will retrieve inventories under PRODUCTS table which contains product title, SRP and Sold by (input field) under his account. Average possible returned rows will be around 1k-5k. If the 'Sold By' has value, it will show as read only. But if not, it will be editable.
Then the user has a list of product IDS printed on a paper that was sold by his employees and he has to scan each product id and put the name of his employee under Sold By and the price sold. This is a manual procedure..
Then after he finishes encoding, he has to click save button to save changes in the db.
what is the best way to implement this? Is it efficient to use js functions such as datatables?
How To Transpose 2D Array As In Switch Rows And Columns
Apr 14, 2015how to switch the elements in a 2D array. As an example row 1 would become column 1 in a second array.
View Replies View RelatedJSF :: How To Change Rows Attribute Of InputTextarea Dynamically
Feb 13, 2014i have a field that varies from 10 to 3000 VARCHAR in DB. A field called IDTEXT in a database that can be even a single word or up to a max of 3000. I want to display that in a form. Based on its size i want to very the size of the <h:inputTextarea>. How can i do it..will i be able to set row property from bean?
View Replies View RelatedSwing/AWT/SWT :: JTable Not Able To Render Rows In Different Colors
Aug 24, 2014I have a jtable , a customtablemodel and a customcellrenderer with the NetBeans IDE. I want to have different colors for different rows. But anytime I run the application , the rows are not painted as expected. The code snippets are provided below.
This code is from the jtable :
duesTable = new javax.swing.JTable();
duesTable.setModel(duestableModel);
TableColumn tcol = duesTable.getColumnModel().getColumn(2);
tcol.setCellRenderer(new CustomTableCellRenderer2());
duesTable.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);
this code is from the TableCellRenderer
public class CustomTableCellRenderer2 extends DefaultTableCellRenderer{
@Override
public Component getTableCellRendererComponent (JTable table,
Object obj, boolean isSelected, boolean hasFocus, int row, int column) {
Component cell = super.getTableCellRendererComponent(
table, obj, isSelected, hasFocus, row, column);
[Code]...
This is from the Table Model.
public class DuesTableModel extends AbstractTableModel implements TableModelListener {
private List<List<Object>> dataList = new ArrayList<>();
private String[] header = { "ID"," PAYMENT YEAR" , "AMOUNT"}; // Payment year is a date
datatype
private int minRowCount = 5;
[Code]....
JSP :: Is It Possible To Show Thousands Rows Of Table In Web Page
Jan 14, 2015I have a lot of records in excel around 2000 rows and it can be more so what I am looking for is that I need to show this records in the web for front end user. I want to feel the user that it is the same as excel but web based so he can filter rows , highlight rows or columns and export whatever filtered by him . I have one sample photo for that program ( called IPCS ) , I am using it now but I need to make same like that in JSP or anything using java I can do it.
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