Core Java

jdbc

reshma raghu — Sat, 21 Nov 2009 02:54:30 -0500

i am having problems connecting DB2 database to my Java application using NetBeans.
Here is the Code:

package app;
import java.sql.*;
import java.lang.*;
import java.io.*;
import COM.ibm.db2.jdbc.app.*;
public class Main {

public static void main(String args[]) throws IOException
{
try
{
//Loads Type 2 Driver
Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");

}
catch (ClassNotFoundException e)
{
System.err.println("Could not load DB2 driver! \n");
System.err.println(e.getMessage());
System.exit(1);
}

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Tools and Methods

RE:Rss--Search Engine For Rss Feeds.

Mallepula Narayana — Wed, 18 Nov 2009 13:50:34 -0500

Hi All, I have news RssFeed URL,by using Rss Reader I am able to displaying all news articles of that News RssFeed URL.But my problems is I dont want display all news articles, I want to display selected news articles based on keywords,I mean if news RssFeed consists of sports,education,entertainment,technology etc from that keywords as sports,education, articles I want to display. Thanks in advance. Regards, Mallepula

Enterprise Java

IBM WebSphere Application Server V7 Java Persistence API (JPA) 2.0 Open Alpha

wsemg — Thu, 05 Nov 2009 10:38:47 -0500

IBM WebSphere Application Server V7 Java Persistence API (JPA) 2.0 Open Alpha

Object-relational persistence is a key developer requirement for many application developer scenarios. JPA is the Java EE standard for object-relational persistence and was first introduced as part of Java EE 5. As part of the Java EE 6 standards, JPA 2.0 (JSR-317) updates object-relational capabilities with important developer APIs and enhancements.
Key additions in JPA 2.0 include:

* Significant programmer productivity improvements

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Enterprise Java

cannot find file error while trying to complie a servlet

divya — Thu, 05 Nov 2009 09:45:14 -0500

I have a class in C:\workspace\test\src\com\example\web\Test.java
I am trying to compile this servlet.
my javac is at C:\Sun\SDK\jdk\bin

i set the path like this set PATH=%PATH%;C:\Sun\SDK\jdk\bin

am at C:\workspace\test

I am compiling like this
javac -classpath /tomcat/common/lib/servlet-api.jar;classes:. -d classes src/com/example/web/example/web/Test.java

and i get cannot read:Test.java error

Please help

Core Java

How to convert Html to Image using Java

arthikbabu — Wed, 04 Nov 2009 09:16:35 -0500

Hi All,
I need to convert a GWT(Google web toolkit) UI to the image file.
Can anyone give me a suggestions to proceed?

I have googled and I found most of the thing with respect to ActiveX
controls. I am not supposed to use ActiveX.

I have looked some AWT / swing coding to convert the html page to image but i am not able to get the full website or when i try some site to convert as a image then it not rendered fully.

Thanks

Enterprise Java

jar file varification

plaintext — Sat, 31 Oct 2009 00:16:46 -0400

A jar file which was signed using 1.4 javas jarsigner tool, when varified using 1.5, gives a warning that the certificates have expired. why is this ?
Warning: jar contains entries whose signer certificate has expired.

Core Java

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

inheritace

nagworks12 — Sun, 25 Oct 2009 11:28:48 -0400

Hi
when to use inheritance,delegation,composition
can you give me some examples.

Thanka
Nagarjuna

Core Java

How can I call a C program in a Shell scipt from java

habibur — Thu, 22 Oct 2009 03:34:53 -0400

Hi all,
I have a C program namely NetLibExample.c.I have compiled it to get a NetLibexample executable in RHEL5. It is successfully running from the terminal itself by the syntax: ./NetLibExample
I have written a shell script to call the same.The shell script is test.sh

test.sh
cd /working/AVClient
mkdir habib_test
./NetLibExample
echo "1 image captured"

This shell is running successfully and giving me the output( a new folder habib_test and output from the C program)

I have to call the shell script from Java program.The program is like this.

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Community Discussion

How to Copy the contents with line breaks from a JTable to Excel with line breaks included

chaithusworld — Fri, 16 Oct 2009 09:18:08 -0400

Hai
I have an application in which I have a JTable with line breaks(pressing Enter key while editing) included in each and every cell.I have used the code in this site to get my contents to be copied to excel(How to copy data from jtable to Excel).The problem is when I copy the contents from my JTable to Excel I am not getting the contents in same format as in my Jtable(with line breaks) to my excel that is with line breaks.Is there any way to solve my problem?

Thank You
Chaithu

Enterprise Java

I NEED HELP!

kutless3 — Wed, 14 Oct 2009 23:06:00 -0400

How do I write a program to compute the ideal weight for either male or female. According to one study, the ideal weight for a female is 100 pounds plus 5 pounds for each inch in height over 5 feet. For example, the ideal weight for a female who is 5’3’’ would be

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Tools and Methods

Ideal weight Help!

kutless3 — Wed, 14 Oct 2009 20:42:24 -0400

How do I write a program to compute the ideal weight for either male or female. According to one study, the ideal weight for a female is 100 pounds plus 5 pounds for each inch in height over 5 feet. For example, the ideal weight for a female who is 5’3’’ would be

Read more ...

Community Discussion

HTTP Status Code 500 Returned - HttpURLConnection to Connect to Web Server Cluster Nodes

dthanki — Mon, 05 Oct 2009 11:32:16 -0400

Presently, I am attempting to use the HttpURLConnection to make web server calls across multiple nodes participating in a web server cluster. I have a web application 'MyWebAppl' that is running/deployed on 'WebServerA' (Node #1) and the same web application 'MyWebAppl' that is running/deployed on 'WebServerB' (Node #2). From 'WebServerA' I am attempting to open/establish a HttpURLConnection with 'WebServerA' and 'WebServerB' which results in IOException with an HTTP Status Code of 500.

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Core Java

Constructors

babylonlion — Wed, 30 Sep 2009 21:42:50 -0400

I need to make the following code calculates the volume and prints the dimensions and volume like so:
cube one dimensions are: w =7, h=2 d=3, volume = 42
cube two dimensions are: w =5, h=8, d=2, volume =80
and so on
Can somebody please help me?
{ public static void main(String[] args) { Cube[] cube = new Cube[5];
cube[0] = new Cube(2.0, 3.0, 5.0); cube[1] = new Cube(1.0, 4.5, 3.3); cube[2] = new Cube(5.6, 10.0, 2.9); cube[3] = new Cube(4.5, 7.8, 22.0); cube[4] = new Cube(9.0, 7.7, 5.1); Read more ... Community Discussion
servlets javaisfun_NOT — Mon, 28 Sep 2009 13:30:03 -0400 i want to know if Tomcat 5.5 wud work with jdk 1.6 or not becoz i m reading frm the book on java for the web by budi kurniawan and i searched for the error 404 when i use the browser to run my servlet......and i followed what the solution to it was given that i had to make a package and then finally run the servlet ...........the prob still exists :-( ............. main Q :does tomcat5.5 work with jdk1.6 Tools and Methods 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 How to judge the commond called by Runtime executed successfully or not apachemaven — Mon, 28 Sep 2009 00:19:17 -0400 I use java.lang.Runtime to call some standalone executeable commond (which will open another application do some operation use a comond line manner) in my application,however I can not judge whether the commond is executed or whether it is executed successfully. And someone tell me I should define the standard for judge the success and failture. But I have no idea. Read more ... Core Java Inheritance is evil iirekm — Sun, 27 Sep 2009 01:14:19 -0400 This article describes tells why inheritance can cause problems, and how to solve them. Link: http://coding-masters.blogspot.com/2009/01/inheritance-is-evil.html Core Java JVM got crashed hplemon — Thu, 24 Sep 2009 09:15:26 -0400 This is a java program including JNI native method. When program started, JVM got crashed and produced system core file. It seems the error was thrown from JNI. I am not familiar how to debug core file. Not sure what error can cause this problem. Anyone can help how to debug? I used dbx tool to analyze the core file and got this: pthdb_session.c, 833: 0 PTHDB_INTERNAL (internal error) pthreaded.c, 1953: PTHDB_INTERNAL (internal error) IOT/Abort trap in _p_sigsuspend at 0xd01246f4 [untrusted: /usr/lib/libpthreads.a(shr_xpg5.o)] Read more ... Core Java Whats new in Java Open JDK 7 srikanth.s.nair — Thu, 24 Sep 2009 05:44:02 -0400 Open JDK 7 In addition to enhanced API's JDK7 highlights 5 new feature... * Modularity * Multi-Language Support * New Garbage Collector * NIO.2 New File System API * Additional Swing API Virtual Machine Level Features Compressed 64-bit object pointers A technique for compressing 64-bit pointers to fit into 32 bits, which decreases memory and memory bandwidth consumption and thereby improves performance Garbage-First GC (G1) A new garbage collector that promises to achieve lower pause times and better predictability than the current CMS collector Read more ...Tools and Methods use of -xbootClasspath kk1687 — Wed, 23 Sep 2009 11:03:46 -0400 Hi, Why we have to use -XBootclasspath option while starting a JVM. Is that coming into picture when the Custom classloaders are used much and forces the jvm to load the classes from the path specified in the option ,using the parent Classloader of all classloader. And then why we need "append" and "prepend" options. Please share ur views and knowledge. Thanks, kk Community Discussion eclipse ant jasper reports maoqiu — Tue, 22 Sep 2009 23:58:38 -0400 hi guys... i've just started learning about jasper reports... its been a week or 2 now and i still can't get any reports generated... is there any kind soul out there with a step by step tutorial on how to generate a simple report from scratch(installing jasper reports, ants & etc using eclipse ide)? Thanks! Tools and Methods The GridBagLayout apachemaven — Sun, 20 Sep 2009 07:50:20 -0400 I want to use the GridBagLayout to add some compoent in my applicaiton. My require is: In a JFrame,spit it to 2 row and 2 colum. In the first row I want to add a JLabel and a JTextFiled,and I want the JLabel take the 20% width ,and the JtextField takes the rest 80% How to implement it ? Can I use the absoult size for the JLabel and other compoent only?for example label.setPreSize(100,10)? Read more ... Tools and Methods 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