Converting Longblob From MySQL To Java
May 13, 2015I wanted equivalent datatype of longblob in java ...
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Converting String To Date And Time MYSQL
Apr 8, 2014In my java file I made Strings of date and time, but my MYSQL database needs Date and Time of course. I've tried to convert them, but I keep getting this exception: org.apache.jasper.JasperException: java.lang.NumberFormatException: For input string: "2013-02-20"
public class Vogel {
static final String url = "jdbc:mysql://localhost:3306/turving";
public static void Insert(String datum, String tijd, String plaats, String spotternaam, String vogelsoort) {
try {
SimpleDateFormat format = new SimpleDateFormat("YYYY-MM-DD");
SimpleDateFormat formatt = new SimpleDateFormat("HH:MM:SS");
java.util.Date parsed = format.parse(datum);
java.util.Date parsedd = formatt.parse(tijd);
java.sql.Date sql = new java.sql.Date(parsed.getTime());
java.sql.Time sqll = new java.sql.Time(parsed.getTime());
[code]....
Synchronizing MySQL And Java Application
Dec 17, 2014I have written a java application that retrieves data from a database and display it on a graph. What i want is that the two systems are synchronized in such a way that when we update a value in the database, it is immediately shown on the graph.i have tried to use a refresh button but decided this would increase the overhead.
View Replies View RelatedJava EE SDK :: GlassFish MySQL Datapool Not Working
Mar 17, 2015I have installed the lastest version of GlassFish and I wanna create new datapool using MySQL.
But when I create it and then I ping it, it shows me this error:
Ping Connection Pool failed for Testing. Connection could not be allocated because: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: java.net.ConnectException: Connection refused: connect STACKTRACE: java.net.SocketException: java.net.ConnectException: Connection refused: connect at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:156)
[Code] ....
JDBC :: GetMaxPoolSize In Java With Glassfish And MySQL
Mar 8, 2015I have an java connection pool using glassfish and mysql jdbc connector. All is fine, my datasource is working using JNDI, etc. But i need to know some info about of connection pool status (maxPoolSize, current active, etc..). I need it to monitoring the connection in the web app.
Some of my configuration.
sun-resources.xml file:
<resources>
<jdbc-resource enabled="true" jndi-name="jdbc/db" object-type="user" pool-name="dbPool">
</jdbc-resource>
<jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false"
connection-creation-retry-attempts="0"
connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false"
[Code] ....
All work fine. But i need get de pool size and MysqlDataSource class don't have a method to get it. In tomcat, i use org.apache.tomcat.jdbc.pool.DataSource with getMaxActive() and getActive(). And it work fine. How i can obtain it on glassfish server?
Importing Excel Data Into MySQL Database Through Java?
Aug 3, 2014import data from excel sheet into mysql database through a java program. How coding will be done in Core Java.
View Replies View RelatedHow To Connect MySQL Database For Java Desktop Application
Jan 21, 2015I want to develop desktop application with mysql . How to connect mysql . Any sample project or examples to learn .
View Replies View RelatedHow To Get Date Data Type From MySQL To Java Format
May 22, 2012In my project i am facing an problem, The My SQL Data base will accept the date format of yyyy/mm/dd only as "Date" data type but in my program i wants to use dd/mm/yyyy format. (i have this same format now) that's why I am unable to insert / retrieve it..
View Replies View RelatedHow To Use Single Button To Insert And Update In Java While Using MySQL Database
Oct 29, 2014I am developing my first Java application and the database I use is MySQL. I have created two separate buttons; one to insert new data into my database and the other to update the database when changes are made.
Each button is working perfectly, but I now want to combine both functions into just the save button. Thus, whether I am entering new data or modifying existing data, the save button should use an IF ELSE condition to decide whether to use the INSERT or UPDATE command.
My problem is, how do I write this IF ELSE statement? What should be the condition? For example;
IF(what? ){
String sql ="Insert into Table1 (classID,className,counselorID,startDate,endDate) values (?,?,?,?,?)";
}ELSE{
String sql2 = "update Table1 set classID = '"+value1+"',className='"+value2+"',counselorID='"+value3+"',startDate='"+value4+"',endDate='"+value5+"'
where classID = '"+value1+"'";
}
Java Servlet :: Storing Images In Folder And Their Relative Paths In MySQL Database
Nov 16, 2012I am developing an web application with servlets and jsp. I have an issue to store images. I am storing images in folder and their relative path's in mysql database.
When I retrieve path from database then using <IMG> tag i have displayed image like:
out.println("<td><img src="+user.getPlaceImage()+" width='70' height='50' /></td>");
It is working fine with internet explorer but not working (that is Not displaying image) in chrome/mozilla.
How to display that image in all browsers....
JSP :: Converting ASP To Java
Dec 22, 2014I'm converting from ASP to Java for a legacy site. I believe the first part of the if statement is right but I'm having an issue within the else staetment. I'm getting date is undefined, I've tried using getYear and getDate but have not been successful.
ASP:
If Request("action") = "results" Then
aMonth = Request("selMonth")
aDate = cint(Request("selDate"))
aYear = cint(Request("selYear"))
Else
aMonth = UCase(MonthName(Month(Date()),true))
aDate = Day(DateAdd("d",-1,date()))
aYear = Year(Date())
End If
[code]....
Converting Into Unicode Using Java
Jan 28, 2014This is the code to convert string into unicode but I get an error as "illegal start of an expresssion"while running the code..
import java.util.Scanner;
import java.lang.String;
import java.lang.Character;
public class A
{
public static void main(String args[])
{
[Code]...
Converting Java To Exe Error
Oct 5, 2014I compiled a java program and converted it to an exe file and it works fine on the computer I created the java file in but when i try it on another computer it gives me a "Java Virtual Machine Launcher - A Java Exception has occured" error message.
View Replies View RelatedConverting Math Formula To Java?
Jan 20, 2015I'm trying to convert a Formula to run in a java program.
This is the formula:
(you can ignore the modifier part)
This is my attempt. However it prints out 0.0
import java.util.Scanner;
public class DamageCalc{
public static void main(String[] args){
Scanner s = new Scanner(System.in);
[Code].....
Converting Pseudo-code Into Java Language?
May 12, 2015I am trying to use a for loop for getting hours for an employee for five days. how to convert my pesodocode into java language so that it will compile. This is what my pesodocode looks like:
begin getHours()
for(index=0; index <5; index++)
get hours **System.out.println()
**inputString = input.readLine()
**plumbersHours[index] = plumbersHours [index] = integer.parseint(inputString)
endfor
index = 0
while (index < 5)
totalHours + = plumbersHours[index]
index++
end while
return
Converting Range Statements To Sets In Java
Mar 20, 2014I am trying to Extract the ranges of Variables from a Text File. I extracted lines of the forms X in 1..10 Y in 12..50 Z in 0..19 / 66/ 95..100 Where X in 1 ..10 states that X takes values from set 1 to 10 Similarly for Y and for Z its a Union of different ranges of the values (0 to 19, union 66,union 95 to 100)
I want to Map these Variables to their respective sets using Hashmap where Key is Variable name and value will be a Set. My Hashmap Signature is HashMap> hm=new HashMap>();
Java Code:
while((line=br.readLine())!=null) {
Matt=Patt.matcher(line);
if(Matt.find()) {
//System.out.println(line);
String []s=line.split(" ");
[Code] .....
I am stuck at extracting the variables ranges from these plain strings.
Calculating Average Of Two Ints And Converting To Double In Java?
Oct 31, 2014how to use Java and for my coursework I have been asked to construct an application that will read in the exam mark and coursework mark and then print out to 1 decimal place the average of the coursework and exam mark. When I submit it to the coursework submission system it says it's incorrect.
The answer that it's asking for is the answer that my code produces (ex = 71 cw = 40 mark = 55.5) But for some reason it says this when I submit it:
-#### << Differences between expected (<) your answer (>) >> ------------
1c1
< ex= 91 cw = 80 mark = 85.5
---
> ex = 71 cw = 40 mark = 55.5
-------------------------------------------------------------------------
Check the above output for why this attempt failed And when I change the ex to 91 and cw to 80 it asks for > ex = 71 cw = 40 mark = 55.5 again.
class Main
{
public static void main( String args[] ) {
int ExamMark=71;
int CourseworkMark=40;
double cost = (double)(ExamMark + CourseworkMark) / 2;
System.out.printf("ex = " + ExamMark + " cw = " + CourseworkMark + " mark = " + cost);
System.out.println();
}
}
Java Converting Percentage To Letter Grade - Not Running
Sep 14, 2014I am trying to create a program that allows me to enter 5 students numeric grade (0-100) to a letter grade (A, B, C, D, F) and I CANNOT use an array. When I try to run my program it says main class not found, and when I change the it from a string to a void in the main method it does not work.
Java Code:
import java.util.Scanner;
public class Week3ControlStatements2
{
public static String main(String[] args){
int numberGrade = 0;
int quotient = numberGrade / 10;
int remainder = numberGrade % 10;
[Code] ....
Converting Positive Binary Inputs Into Hex - Unexpected Output Java
Sep 30, 2014I am trying to write a program for converting positive binary inputs into hex. in the hex output the point (".")is missing.
Suppose my expected output is e7.6 , but i am getting e76
only the "." is missing.
here is my BinToHex class..
import java.io.*;
public class BinToHex {
double tempDec,fractionpart;
long longofintpart,templongDec;
String input ="11100111.011";
String hexOutput=null,tempDecString,hex = null;
static int i = 1;
[Code] ....
Program For Converting Positive Binary Inputs Into Hex - Unexpected Output Java
Sep 30, 2014I am trying to write a program for converting positive binary inputs into hex. in the hex output the point (".")is missing.
Suppose my expected output is e7.6 , but i am getting e76.
Only the "." is missing.
Here is my BinToHex class..
import java.io.*;
public class BinToHex {
double tempDec,fractionpart;
long longofintpart,templongDec;
String inpu ="11100111.011";
String hexOutput=null,tempDecString,hex = null;
[Code] .....
Here is how decimal fraction is converted into hex or here too...
Java Servlet :: Printed To Browser As Plain Text Instead Of Converting It To HTML?
Jul 23, 2012I learning java an created the following servlet. The only problem is it printed to the browser as text instead of html..
It literally printed like this.
<html>
<HEAD><TITLE>Hellow World</TITLE></HEAD>
<body>
This STUFF IS WORKING!!!!!!!!!!!!!!!!!!
</body></html>
Why???
This is the servlet I created.
package sample;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloWorld extends HttpServlet {
[Code] ....
Java Chat Using MySQL / How To Keep Updating Chat
Nov 12, 2014Using MySQL to store the chat data/users and then recieve the chat data every time the chat table updates because someone entered a new message. I am woundering if this is the right way to do it or should try something else?
What I am looking for is someway to run a query each time the database has been updated or receive data from the database each 10 sec, is it even posible, if yes then how? Been trying to look into threading, but do not seem solve this problem and cant find any information about it.
How To Populate Jlist Using MySQL
Apr 22, 2015I don t know why this throw a nullpointerexception. i want to add rows from mysql database to my jlist, this is my method populateJlist().
public void populateJlist() throws SQLException {
conn= DriverManager.getConnection("jdbc:mysql://localhost:3306/agenda","root","");
DefaultListModel m = new DefaultListModel();
statement=conn.prepareStatement("SELECT *FROM apunte");
rs=statement.executeQuery();
String itemCode;
[code]...
JSF :: MySQL Data Not Showing?
Apr 18, 2014 I'm trying to show mysql data in JSF using this example [URL] .... . I figured out what <h:dataTable value="#{userBean.getUserList()}" var="u" border="1"> must be <h:dataTable value="#{userBean.userList}" var="u" border="1"> but getting error:
09:08:38,654 ERROR [stderr] (http--127.0.0.1-8080-1) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307)
09:08:38,654 ERROR [stderr] (http--127.0.0.1-8080-1) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101)
[code]...
JSP :: Retrieve A BLOB From MySQL DB
Jan 9, 2015I need to retrieve an image from the MySQL DB and display it in my JSP. The code below retrieves and displays the image with success. But, an exception is thrown:
SEVERE: Servlet.service() for servlet [jsp] in context with path [/FileFinalText] threw exception
[java.lang.IllegalStateException: getOutputStream() has already been called for this response] with root cause
java.lang.IllegalStateException: getOutputStream() has already been called for this response
[code]...
how can I resolve the cause with the getOutputStream() and prevent this exception to occur?
Swing GUI With MySql Database?
Mar 10, 2014I've got another project for a course and am stuck. I've debugged and tried to figure out where it is breaking, but I just can't find it. I've used this connection code block as well as the contstructors before, but this just won't work. I've got a tab that should send all of the information to a MySql database upon the click of 'Add Employee'. I've given my connection string, the addEmployee(); code, and if needed I can include the subclass code. I've got a superclass 'Employee' and a subclass 'Salaried' that uses four attributes from 'Employee'.
private void btnAddActionPerformed(java.awt.event.ActionEvent evt) {
addEmployee();
}
public void addEmployee() {
int socialSecurity = 0;
boolean error = false;
[code]....