Java Caching System - Set Expire Time For Object Using Predefined Method
Jul 22, 2014When we are caching an object, how to set expire time for that object by using pre defined methods?
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Expire Sending Link To A Mail After Particular Period Of Time
Feb 5, 2011How to Expire the sending link to a mail after particular period of time
View Replies View RelatedProgram That Changes The Value Of A Variable When A Predefined Time Arrives
Mar 19, 2014Is it possible to write a program that changes the value of a certain variable when a certain predefined time arrives, without running the same loop over and over again (and stucking the computer)?
View Replies View RelatedHow To Get System Time In Java
Jun 1, 2014I just want to calculate search time for my algorithm . How to get system time in java other than System.nanotime() and System.currenttimemillis() as these methods does not returns consistent time for same input is their another option to get system time???
View Replies View RelatedModify Class Time2 To Include Tick Method That Increments Time Stored In Object By One Second
Jul 9, 2014Modify class Time2 to include a tick method that increments the time stored in a Time2 object by one second. Provide method incrementMinute to increment the minute and method incrementHour to increment the hour. The Time2 object should always remain
a) incrementing into the next minute,
b) incrementing into the next hour and
c) incrementing into the next day (i.e., 11:59:59 PM to 12:00:00 AM).
how to manage case 4 stuff and what's the problem of this CODE.
import java.util.Scanner;
public class Time2Test
{
public static void main( String args[] )
{
Scanner input = new Scanner( System.in );
Time2 time = new Time2();
// input
System.out.println( "Enter the time" );
System.out.print( "Hours: " );
time.setHour( input.nextInt() );
[code]....
Java Convert String Of XML To Document Object Is Null All The Time
Apr 14, 2014I am trying to parse a XML string into `org.w3c.dom.Document` object.
I have looked at solutions provided [here](xml - How to convert String to DOM Document object in java? - Stack Overflow), [here](How to create a XML object from String in Java? - Stack Overflow) and a few other blogs that give a variation of the same solution. But the `Document` object's #Document variable is always null and nothing gets parsed.
Here is the XML
XMLMappingValidator v = new XMLMappingValidator("<?xml version="1.0" encoding="utf-8"?>
" +
"<mapping>
" +
"<container>
" +
"<source-container>c:stem.csv</source-container>
[Code] ....
When I call
**v.getXML().toString()**
I get
`[#document: null]`
Clearly, the parse is failing. But I don't understand why.
Java Convert String Of XML To Document Object Is Null All The Time
Apr 15, 2014I am trying to parse a XML string into `org.w3c.dom.Document` object.
I have looked at solutions provided [here](xml - How to convert String to DOM Document object in java? - Stack Overflow), [here](How to create a XML object from String in Java? - Stack Overflow) and a few other blogs that give a variation of the same solution. But the `Document` object's #Document variable is always null and nothing gets parsed.
Here is the XML
Java Code:
XMLMappingValidator v = new XMLMappingValidator("<?xml version="1.0" encoding="utf-8"?>
" +
"<mapping>
" +
"<container>
" +
"<source-container>c:stem.csv</source-container>
[Code] .....
When I call Java Code: **v.getXML().toString()** mh_sh_highlight_all('java');
I get Java Code: `[#document: null]` mh_sh_highlight_all('java');
Clearly, the parse is failing. But I don't understand why.
Time Management System
Oct 27, 2014I'm in the middle of building A time management system for myself.I'm currently using JodaTime for timing in java. I just can't figure out who to save my data like, the starttime, stoptime and day time.
public void save() throws SQLException {
String checkSql = "select count(*) as count from Time where id=?";
PreparedStatement checkStmt = con.prepareStatement(checkSql);
String insertSql = "insert into Time (id, day, starttime, stoptime, overtime, exception, hours) values (?, ?, ?, ?, ?, ?, ?)";
PreparedStatement insertStatement = con.prepareStatement(insertSql);
String updateSql = "update Time set day=?, starttime=?, stoptime=?, overtime=?, exception=?, hours=? where id=?";
PreparedStatement updateStatement = con.prepareStatement(updateSql);
[code]....
Servlets :: Restrict User To Login From One System At A Time
Apr 23, 2014In My application I want to implement functionality to let user login from only one system at a time. I am searching for something that can Identify the system uniquely (Like IP address or Mac address ). I am using servlet and I don't know how to access Mac in servelt
View Replies View RelatedAnonymous Object - Can't Understand One Time Usage Of Object
Aug 18, 2014Explain anonymous objects with example clearly...i read some where anonymous objects advantage is saving memory...it is benificiable when there is only one time object usage in our program..i can't understand one time usage of object ....i know anonymous objects but i don't know in which context we use them in our programs...i did the anonymous object program with my own example but i can't differentiate this one with normal object..i'm providing my own example below
//anonymous object
public class anonymous {
int x=10;
int y=25;
void display()
{
System.out.println("anomymous");
[code]....
Java Servlet :: How To Get Data Directly From Request Object In Service Method
Dec 1, 2012Is it possible to get data directly from request object in service method of servlet than why it is not possible to write directly into response object through service method instead of this we have to take PrintWriter or ServletOutputStream class object....
View Replies View RelatedJSP :: Making Sessions To Not Expire?
May 30, 2006how this is done using session.setMaxInactiveInterval(); at first, i did not set anything but it expires anyway.so i'm trying not to let the session expire.session.setMaxInactiveInterval(0) does not work.
View Replies View RelatedString Hashcode Caching
Jul 17, 2014Winston Gutkowski in one of the threads that one of the advatanges of String being immutable is that its hashcode could be cached. How does this work? I read somewhere that each String's hashcode is stored in a private int variable, but I don't understand how it is reused.
View Replies View RelatedEquals Method - Take Object Reference And Return True If Given Object Equals This Object
Mar 28, 2014Create an equals method that takes an object reference and returns true if the given object equals this object.
Hint: You'll need 'instanceof' and cast to a (Geocache)
So far I have:
public boolean equals(Object O){
if(O instanceof Geocache){
Geocache j=(Geocache) O;
if (this.equals(j)) //I know this is wrong... but I can't figure it out
return true;
}
else return false;
}
I think I have it correct up to the casting but I don't understand what I'm suppose to do with the this.equals(). Also I'm getting an error that I'm not returning a boolean... I get this all the time in other problems. I don't get why since I have to instances of returning booleans in this. "returns true if the given object equals this object" makes no sense to me. I assume the given object, in my case, is 'O'. What is 'this' object referring to?
EJB / EE :: Caching Objects - Get Data From Database
Apr 29, 2014How do we cache objects in EJB 2.
My requirement is i need to get data from the database for the first time and retain in cache it throughout the application life.
How To Apply Electronic Signature To Predefined XML
Oct 4, 2014I must apply a electronic signature to a predefined XML.
File looks like this:
<xml....
<invoice serialCode="NT" serialNumber="123" issueDate="2014-10-01" startDate="2014-09-01" endDate="2014-09-30" orgUnitCode="CAS-NT" providerCode="15107618" providerCategory="PARA" contractNumber="8207" contractType="PAR" contractDate="2014-06-27" totalAmmount="34.81"
And at the end there is a sinature that looks like this:
‚ R0‚ N0‚ 6 $P Gæ&"ùO]ó]0
*†H†÷
0h1%0# U DigiSign Qualified Public CA1 0 U DigiSign Public CA1 0 U
DigiSign S.A1 0 U RO0
140722065817Z
[Code] ....
How can I do this in java?
Determine Distance The Object Falls In Specified Time Period
Apr 3, 2014When an object is falling because of gravity, the following formula can be used to determine the distance the object falls in a specified time period:
d = 1/2 gt^2
The variables in the formula are as follows: d is the distance in meters, g is 9.8, and t is the amount of time, in seconds, that the object has been falling.
Write a method named FallingDistance that accepts an object's falling time (in seconds) as an argument. The method should return the distance, in meters, that the object has fallen during the time interval. Demonstrate the method by calling it in a loop that passes the values 1 through 10 as arguments, and displays the return value.
import java.util.Scanner;
import java.text.DecimalFormat;
public class FallingDistance
{
public static void main(String[] args) {
DecimalFormat num = new DecimalFormat("#,###.00");
Scanner keyboard = new Scanner(System.in);
double fallingTime;
[Code] ....
My program runs, but no matter what falling time I enter, I get the same numbers. What am I doing wrong?
Pass Predefined Size Array As Argument
Jan 9, 2014Is this possible in Java?
public void doSomething(int[4] year){
}
What I am trying to do is to get the person who is using the method to send a year in the format 1998 and so on.
What would be the best way to accomplish this?
Swing/AWT/SWT :: Caching TableModelListener Data For Updates
May 6, 2014how a JTable and respective DB table would be updated via directly editing a JTable: After table cell is updated, the setValueAt method of my custom TableModel is called to change the value of the data vector (assume I'm using vectors to store data). setValueAt then calls fireTableCellUpdated which updates the table view, and calls my custom TableModelListener.tableChanged method. Here is where I would write code to update the database.
This means an Update statement is fired each time a cell changes. Sometimes I would like to only send the Update after the entire record has been updated (and a user clicks a Save button).
Caching Downloaded Classes On Client Machine
Sep 30, 2014Does the following code, which gets a class from a remote server, caches the class on the client machine?
URL u = new URL("http://1.2.3.4:80/JavaClasses/MainClass.class");
InputStream input = u.openStream();
DataInputStream data = new DataInputStream(input);
byte classBytes[] = downloadByteCodesFromURL(data);
Class c = defineClass("MainClass", classBytes, 0, classBytes.length);
[Code] .....
How To Create New Customer Object Each Time User Chooses 1 As Option
Feb 17, 2015import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class App {
public static void main(String[] args) throws IOException {
Scanner keyboard = new Scanner(System.in);
System.out.println("Please Select an option > ");
[Code] .....
Convert Roman To Ordinary Conversion Without Using Any Predefined Methods
Feb 25, 2015convert roman to ordinary conversion without using any predefine methods,where we are giving input thru command prompt
View Replies View RelatedWhich Method Is Used While Passing Or Returning A Object From The Native Method
Mar 5, 2014Which method is used while passing or returning a java object from the native method?
View Replies View RelatedCalling Object Method From Another Object
Oct 26, 2014I've been trying to learn Java for the last 36 hours or so (after applying for a HTML/CSS job saying "Java knowledge preferred"), and decided to experiment a bit making a graphical tic-tac-toe game. I eventually managed to get that done and it's working. Working code below:
[Java] tic tac toe 1 - Pastebin
So, it works to an extent, however, the way I am capturing which cell is selected seems very sloppy, and would not work if the cells weren't squares or rectangles. So I made a copy of the project and restructured it adding the mouse event to the cells, but now I can't get JComponent to repaint. New code below:
tic tac toe 2 - Pastebin
Curiously, clicking triggers the action for all 9 cells, but I presume it's because I haven't bounded them making it think I've clicked all 9 simultaneously.
What I've tried:
Make the Cell class extend the game class and call this.repaint()- causes stack overflow.
Calling Game.GameState() within the cell clicking event and making that function static - compiler doesn't like calling repaint() inside a static function.
Making another class to make a clone of the Game object and then refresh- was never going to work....
JSP :: How Bank Sites Throw User To Session Expire Page By Clicking On Browser Refresh / Back Buttons
Jun 20, 2012I got one task from my manager, regarding browser back button, refresh button. He asks me the web application has to work like Banks site... means if I refresh or click on Back button(Browser's) then it has to throw the user out of session, I checked lot in internet. But I found like only disabling back button of disabling F5 keys like that. But he’s not accepting that.
How to approach for this? Can we throw the user out of session when he clicks on browser back button or refresh button. I think its possible . But i don't know how to implement.
How To Integrate Inserting Element Into Method At Same Time
Mar 6, 2014I have an exercise for practicing insertion sorts which asks me to do this:
1) Write an insertion sort in insert the name Sam into the list from names.txt..I know how to write an insertion sort. how to integrate inserting an element into the method at the same time.This is what I have so far.
Java Code:
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
[code]....