Java Language

difficult compilation

pochis40 — Sun, 15 Nov 2009 11:41:03 -0500

I need an advice: I have a program made from a person that now it is not available. It is a Java applet; it is perfectly working and I have the sources: 4 Java files of, respectively, 326, 210, 119 and 35 lines (not a big program) and a very simple html file. I need to change some parameters inside Java files and compile all, but I don't know enough Java language. I have read a lot of tutorials and tried with Eclipse, but without success.

Community Discussion

It's Time to Reinvent Java Web Services

mhansen — Thu, 05 Nov 2009 11:51:56 -0500

Adding web services to existing Java applications should not involve programming. There should simply be a switch that you can turn ON or OFF to determine which parts of a Java application get exposed as web services.

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static connections and connection pooling - what happens when physical connection is lost?

johach — Tue, 03 Nov 2009 19:58:24 -0500

My EJB has a method which will be running on a transaction started by a previous EJB.

This method has multiple calls to a makeValid method that needs to commit separately from the main transaction:

public class MyEJB{


	private Connnection mainConnection = null;

	private static final Connection staticConnection = (new ConnectionHelper()).getConnection();
	public MyEJB(Connection conn){

		this.mainConnection = conn;

	}
	public void myMethod(List myList){

		//...

	        for (int j = 0; j < myList.size; j++) {

			boolean valid = MyEJB.makeValid(); 

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Enterprise Java



thank you nice post...
enkeles — Tue, 03 Nov 2009 18:23:33 -0500
thank you, nice post...

--------------------------------------

  Promocity promosyon Ürünleri, uygun promosyon ürünleri. 

  Lidersan Promosyon ürünleri, Promosyon ürünleri imalatı 

Read more ...JW Talkback



Exceptional handling
nagworks12 — Sun, 25 Oct 2009 22:16:03 -0400
Hi

if we get any exceptioon in java code full stack trace will come

which explain what is the root cause of exception.
I want to know how it was implemented,how we get all statements

can someone explaing briefly.
Core Java



Why is my program returning totalSold=0?
vishwa — Sat, 24 Oct 2009 14:25:23 -0400
I wrote an program that displays total number of hotdogs sold from all the stands. but it is always returning ZERO, i dont understand why...
import java.util.Scanner;
class HotDogStand

{
private int id;

private int numSold;

private static int totalSold = 0;
void HotDogStand(int newId, int newNumSold)

{

id = newId;

numSold = newNumSold;

}
public int getId()

{

return id;

}
public void setId(int newId)

{

id = newId;

}
public int getNumSold()

{

return numSold;

}
public static int getTotalSold()

{

return totalSold;

}
public void justSold()

{ 

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I agree
Sat, 24 Oct 2009 11:06:06 -0400
As a developper I must agree that I hate having to relearn syntax and tool/method names for everything I already know. Usually the new language will not bring any advantages unless it is a domain specific language that addresses the problems of the project (concurrency, portability, ...).JW Talkback



Creating field types can not be modified after initialization
econsta — Tue, 20 Oct 2009 16:43:01 -0400
I'm trying to understand how to do this:
String type field called that can not be modified after initialization and it is visible to outside world without any getter
One int type field called that can not be modified after initialization and it is visible to outside world without any getter.


Getting error with my program.
vishwa — Fri, 09 Oct 2009 21:13:04 -0400
Hi,

I am pretty new to Java and trying to write a program to calculate miles per gallon. But Im getting below error with my code, can some one help me figure out what is wrong with my code..?

" inner classes cannot have static declarations"
import java.util.Scanner;

import java.io.*;
public class MilesPerGallon

{
// Variables.

  int startMiles;

 int endMiles;

 int gallsUsed;
 //Constructor

  public MilesPerGallon(int sReading,int eMiles,int gUsed)

 {

   startMiles=sReading;

   endMiles=eMiles;

   gallsUsed=gUsed;

 }
 public void fillup(int sMiles,int gUsed)

 { 

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Free Java exPress newsletter available
gduda — Mon, 28 Sep 2009 11:01:59 -0400
Are you missing newsletters about Java as I did? If your answer is YES, I have got something for you. There is first issue of JAVA exPress available in English (http://javaexpress.pl). 

OK, it is not the first one, but the first one available in English. 

In this issue you can read about prolems in J2EE applications, Grails, Object serialization in J2ME, XStream, pre-tested commits in Team City, GMF and last, but not least aout Layering. 

JAVA exPress is published every 3 months. So stay tuned. Next issue soon. 

Happy reading!!!Tools and Methods



Java based Quercus PHP Framework
Wed, 23 Sep 2009 13:20:49 -0400
Great article
http://www.ibm.com/developerworks/opensource/library/wa-quercus/index.htmlJW Talkback



DateTime class issue
jdsflash — Mon, 21 Sep 2009 22:33:41 -0400
How do I dim a varialbe to the year it is now.

This returns 1? How come
Calendar DateTime = Calendar.getInstance();

int NewCalcAge;

NewCalcAge = DateTime.YEAR;

System.out.println(DateTime.YEAR);


SCJP details with free SCJP dumps
kumarfair30 — Fri, 18 Sep 2009 10:07:27 -0400
>SCJP details---just click here
Core Java



Any Link B/n ArrayList and HashMap
Rajendra007 — Fri, 18 Sep 2009 03:09:13 -0400
Hi Friends, Can u give few interview questions which relates ArrayList and Hashmap. I mean how to link ArrayList and HashMap.
Core Java



Variabilizing variables
alexgoor — Wed, 02 Sep 2009 15:07:26 -0400
Hi.  I'm tyring to create a couple of data structures - for example, one is a hash containing an integer key and a linked list.  my problem is that i'd like to create an initially unknown number of those hashes and therefore i need a way to dynamically name each hash and each linked list. 

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Enterprise Java



Visual Java?
astevens009@gmail.com — Sat, 22 Aug 2009 19:39:48 -0400
I'm currently preparing to get training in Java - in hopes of making myself more marketable in the software developer market - by working through the book "Teach Yourself Programming with Java in 24 hours". It seems like the language is mostly text based (i.e. - we don't use visual tools, like Visual Studio 2005 for C# or VB, to build GUI's). Is this true? Or are there visual methods I don't know about? 

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Tools and Methods



sharing my jar utility with selected buddies only ?
rits — Sun, 16 Aug 2009 17:16:31 -0400
I have made some general utilities(jars) for my project, which i have to display with my team in class for a competetion. I am sharing my stuff with my team-mates, but afraid they don't re-distribute it to other team's members due to their personal relations before the competetion.
Is their something in java as described in the following code for my jar's class files.


public class UtilityClass{

	static{
		long secretCode = 7534759 ;

		//a hardcoded long value (hardcoded by me for my friend)

		//related to friend's Computer System which either 

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Core Java



need help  aboult  java  print
lee — Mon, 20 Jul 2009 03:39:26 -0400
Hi  everybody

    I need your help .

    I need an example about java printing .

    The main achievement of the print process at the specified coordinates specified sentence Print
thanks everyone
Enterprise Java



Game Applet
clarkdh — Thu, 09 Jul 2009 23:51:25 -0400
So i was working through a tutorial on create java applet games and I've come across something that confuses me a bit. In the tutorial it introduces a new class but no other part of the program initializes it as far as I can tell I was wondering then what the purpose of it is. The link for it is http://javaboutique.internet.com/tutorials/Java_Game_Programming/Bildsch.... The class name is update. Does it actually DO anything? Thanks much.


Applet Game Question
clarkdh — Mon, 06 Jul 2009 21:25:43 -0400
So i was working through a tutorial on create java applet games and I've come across something that confuses me a bit. In the tutorial it introduces a new class but no other part of the program initializes it as far as I can tell I was wondering then what the purpose of it is. The link for it is http://javaboutique.internet.com/tutorials/Java_Game_Programming/Bildsch.... The class name is update. Does it actually DO anything? Thanks much.


Linked List Help
ronenja123 — Fri, 05 Jun 2009 01:23:37 -0400
I have this linked list:



public class LinkedList

{

  public static ListNode start=null;

  public LinkedList()

  {

  }  
  public void insert(String x)

  {

    ListNode current;

    current=start;

    ListNode node = new ListNode();

    node.setData(x);

    if (start==null)

    {

      start=node;

      node.setNext(null);

    }

    else

    {

      while (current.getNext()!=null)

        current=current.getNext();

      node.setNext(null);

      current.setNext(node);

    }

    //System.out.println("inserting "+node.getData());

  } 

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Core Java



New comer comes calling-implemeting/creating a method(specifics)
oya_oya — Sat, 16 May 2009 12:20:43 -0400
okay, I a m very new to Java and not so great at it, though I don't think I'm that bad either,
Anyway, I have to implement a method in a clock class. Every time I try to figure a way to implement the elapsedTime method I get an error message--"inner classes cannot have static declarations"--or--"Cannot find symbol: method timeElapsed(Clock, Clock) location: class TC". when I create a class TC I get the error, "inner classes cannot have static declarations" when I remove static from my timeElapsed method the error is "non-static method cannot be referenced from static context". 

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Ultra beginner trying to implement a method
oya_oya — Fri, 15 May 2009 13:12:49 -0400
okay, I a m very new to Java and not so great at it, though I don't think I'm that bad either,
Anyway, I have to implement a method in a clock class. Every time I try to figure a way to implement the elapsedTime method I get an error message--"inner classes cannot have static declarations"--or--"Cannot find symbol: method timeElapsed(Clock, Clock) location: class TC". when I create a class TC I get the error, "inner classes cannot have static declarations" when I remove static from my timeElapsed method the error is "non-static method cannot be referenced from static context". 

Read more ...
Community Discussion



How to know what jars are needed for various of JMS bus
jzhang2003 — Fri, 15 May 2009 03:27:10 -0400
Could someone tell me how could I know what jars need to be included in the client's classpath when subscribing messagings to different JMS buses?
For example when I try subscribing messagings to the OpenJMS on Glassfish, i know below jars are needed,

appserv-rt.jar

javaee.jar

imqjmsra.jar

imqbroker.jar

imq.jar

appserv-admin.jar

jms.jar

appserv-deployment-client.jar

appserv-ext.jar 

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Community Discussion



Java Swing SpringLayout
Limited_Atonement — Thu, 30 Apr 2009 12:04:34 -0400
Dear Java Developer, 

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Tools and Methods