Java Programming Resources for starting out

Hey guys,
What are the best resources for starting out with Java. I did a bit of work with Java in my Uni course but it was about 2 years ago. I'd like to go over it from the start and get familar with everything again.
Can anyone suggest some good places to get Resources, Tutorials and Exercises for Java Programming?
Thanks in advance.

Getting Started With Java
[Sun's basic Java tutorial|http://java.sun.com/docs/books/tutorial/]
[Sun's New To Java Center|http://java.sun.com/learning/new2java/index.html]
Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
jGuru
A general Java resource site. Includes FAQs, forums, courses, more.
[Yawmarks List|http://forums.devshed.com/java-help-9/resources-for-learning-java-249225.html]
[The Java Developers Almanac|http://www.amazon.com/exec/obidos/tg/detail/-/0201752808?v=glance]
[http://javaalmanac.com|http://javaalmanac.com]
Bruce Eckel's [Thinking in Java(Available online.)|http://mindview.net/Books/DownloadSites]
Joshua Bloch's [Effective Java|http://www.amazon.co.uk/exec/obidos/Author=Bloch,%20Josh]
Bert Bates and Kathy Sierra's [Head First Java|http://www.amazon.com/exec/obidos/tg/detail/-/0596004656?v=glance ]
James Gosling's [The Java Programming Language|http://www.bookpool.com/sm/0321349806]
Gosling is the creator of Java. It doesn't get much more authoritative than this.
Joshua Bloch and Neal Gafter [Java Puzzlers.|http://www.javapuzzlers.com/]

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Java programming guide for Sun ONE

Where can I find the "Sun ONE LDAP SDK for Java Programming Guide" for version 5.2. ?
I have the programming guide for Netscape Directory SDK 4.0 for Java. Will that do?
Thanks for your help.
[email protected]

this to also create and manage the LDAP groups. We
are using the Sun ONE 5.2 LDAP directory server. Are
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I'm replying to myself .... ;-) ahah
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Message was edited by:
the_atom

Both these links are pretty good.
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Hi,
I have Oracle 10 G under vista on my desktop. I am trying to write a simple java program to access/update database tables. I saw in one of oracle example to import 2 packages - namely --- import oracle.jdbc.driver.*; import oracle.sql.*;
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//import com.inet.tds.JDBCRowSet;
import java.util.*;
import oracle.jdbc.driver.*;
import oracle.sql.*;
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Kochhar: 17000.0
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Hunold: 9000.0
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//out.close(); // close PrintWriter stream
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String password = "tiger";
String url = "jdbc:oracle:thin:@localhost:1521:newora";
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Connection conn = null;
String driver = "oracle.jdbc.driver.OracleDriver";
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
} catch ( ClassNotFoundException cnfex ) {
System.err.println(
"Failed to load JDBC/ODBC driver." );
cnfex.printStackTrace();
}catch (Exception e){
e.printStackTrace();
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conn = java.sql.DriverManager.getConnection(url,username,password);
conn.setAutoCommit(false);
return conn;
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// statement to be executed
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Statement st = null;
ResultSet rs = null;
try // make sure the close statements are executed (in the finally block)
// create the statement
st = c.createStatement();
// execute the query
rs = st.executeQuery(query);
// process results
while (rs.next())
// get the employee last name
String eName = rs.getString("ename");
String eJob = rs.getString("job");
String eMgr = rs.getString("mgr");
System.out.println("Emp Name:" + eName +
"Job: " + eJob +
"MGR: " + eMgr);
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// close the statement if it exists
if (st != null) try {st.close();} catch (Exception e) {};
Edited by: user455788 on Dec 19, 2008 9:13 PM

You can download the drivers from http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/index.html.
Note that oracle.jdbc.driver is desupported after 10.2, http://forums.oracle.com/forums/ann.jspa?annID=201, so you might want to consider using a DataSource to provide Connections.
E.G.
{message:id=2819114}

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Is there any way to identify when the page has
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Can anyone help?
Thanks in advance!

heres some code I have been messing about with
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.security.*;
import java.net.*;
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This module handles the customer booking screen **/
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ItemListener
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     TextField telephone;
     TextField email;
     TextField address;
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     int authorisationCode ;
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          emailOutput = email.getText();
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               DataOutputStream out = new DataOutputStream(new FileOutputStream("CustomerDetailsNew.txt"));
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                    jobNumber =in.readInt();            // this code reads last job number and increments it
                    singleChar = in.readChar();
                    jobNumber ++;
                    out.writeInt(jobNumber);
                    out.write('\n');
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                         singleChar = in.readChar();
                         out.writeChar(singleChar);
               catch (EOFException e) { }
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                out.writeChar('\t');
          out.writeChars(telephoneOutput);
                out.writeChar('\t');
          out.writeChars(emailOutput);
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          out.writeChar('\t');
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          out.writeChar('\t');
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                out.writeChar('\n');
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       catch (IOException e){
          System.out.println("Error: " + e);
          System.out.println("Close File"); //*********** End of read/write process, code below renames the new file to the input file
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          fileDelete.delete();
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               DataInputStream in = new DataInputStream(new      FileInputStream("CustomerDetailsNew.txt"));
               char singleChar;
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               try {
                    while (true){
                         singleChar = in.readChar();
                         out.writeChar(singleChar);
               catch (EOFException e) { }
           catch (IOException e){
          System.out.println("Error: " + e);
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                   StringWriter sw = new StringWriter();
                   PrintWriter pw = new PrintWriter(sw);
          try {
               //URL ftpUrl = new URL("ftp://j-charles:[email protected]/jobNumber.dat");
                        //InputStream inFile = ftpUrl.openStream();
               URL ftpUrl = new URL("ftp://jim:evvcece@/jobNumber.dat");
                       InputStream inFile = ftpUrl.openStream();
               BufferedReader in   = new BufferedReader (new InputStreamReader (inFile));
               String line = null;
               while ((line = in.readLine()) != null) {
               System.out.println(line);         }
               in.close();
               catch (IOException e) {
                     System.out.println("Reading Job number error " + e);} // catches IO exception
     public void writeJobNumber(int JobNumber) {
          try {
               URL ftpUrl = new URL("ftp://j-charles:[email protected]/jobNumber.dat");
                       URLConnection conn = ftpUrl.openConnection();
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               System.out.println("writing job number" + jobNumber);
                       PrintWriter writer = new PrintWriter(out);
                       System.out.println("Writing to ftp");
               writer.print(jobNumber);
               writer.print('\n');
                       writer.close();
               out.close();
               catch (IOException e) {
                     System.out.println("Job number error " + e);} // catches IO exception
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               g.drawString( "Job#" + jobNumber, 10,400);
               g.drawString("Authorisation Code:- " + authorisationCode, 200,400);
               g.setFont(formEntry);
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}

Recursive Java programming method for executing recursive SQL queries

Anybody has a Java/JDBC example method to execute recursive SQL queries and print results? The method has to work for any number of queries and levels and the first query passes the parameter to the second query.
Edited by: user4316962 on Jun 12, 2011 1:59 PM

user4316962 wrote:
Guys, the problem what I am trying to solve is much more complex and I don’t think SQL level recursion is enough. I am looking for Java solution with SQL queries in it to make it more flexible and DB independent.
If you want to do recursion in SQL then it has nothing to do with Java.
And if you want to do recursion in Java then the idiom itself has nothing to do with SQL.
Other than that you have provided enough detail for anyone to even guess at what you are asking.
As a start I am not even sure that you understand what recursion is nor how JDBC works. (But it could be that you are using the terms to mean something else.)
And looking at your original post it could be nothing more than that you are looking for a design pattern - perhaps the interpreter.

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Hi,
I'm planning to write a simple java RSS reader/aggregator application and I'm would really appreciate it if someone would point out where I could find tutorials and the appropiate RSS java libaries/API's
Thanks

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Hi,
Is it proper Java standard to use constants first in a conditional statement? I've never seen coding in this way, even when I was in college I never saw it in any of our books.
example:
String x = null;
if (null==x){
//Do some stuff
}

kevjava wrote:
yawmark wrote:
...hence, more work.Not if "NAME_KEY" (i.e., the literal value) changes.
~If some wise guy resets it to null, then you've lost all benefit of making a constant out of it to begin withIf that happens, you've got some people problems to deal with! Anyways, if it's really a constant, it'll be final, right?
.... and I was sort-of reiterating that it was a self-named constant... you're right, of course, but I guess I'm just peaved at having to see stuff like...
private String JAN="JAN";
private String FEB="FEB";
// ...and on and on...
// later...
if (FEB.equals(month)) {
// do stuff
} else {
// do stuff
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Java Programming - Run Web Start App Through IDE Using Existing JNLP(s)

I apologize for the cross post. I believe I mis-posted the first time. The thread belongs here.
http://forums.sun.com/thread.jspa?threadID=5434826

You might try pointing JaNeLA *(<- link)* at it, and fixing any errors it reports. Ignore any optimisations suggested. The optimisations are not properly debugged and would not cause the kind of errors you report.
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Start java-Program when Tomcat starts

I have a TimerTask, that should be executed every hour (war in webapp of Tomcat). If Apache Tomcat will be shut down and started again, Task won't be executed.
Can I define somewhere, that some class should be executed when Tomcat server starts and after restart the tasks will be countinued.
Can I, for example define it some where in web.xml or somewhere else?
I can't controll when tomcat was turned off and started again.
Thanks in advance.

I have a TimerTask, that should be executed every
hour (war in webapp of Tomcat). If Apache Tomcat will
be shut down and started again, Task won't be
executed.
Can I define somewhere, that some class should be
executed when Tomcat server starts and after restart
the tasks will be countinued.
Can I, for example define it some where in web.xml or
somewhere else?
I can't controll when tomcat was turned off and
started again.
Thanks in advance.My advice is to be:
Making your TimerTask to be an application which will do something every 1 hour if it has nothing to do with the Tomcat Server .And tell us what do you want your TimerTask to do ???waiting for you .

Freelancing java programming, how to start?

I'm having trouble starting and getting into new
projects, basically because, I dont have a network
to 'get my name' out there.
So I'm trying different things so I could get at least one project, then if I make it well but not charging TOO MUCH, they may recommend my services.
I tried ads on the paper but didnt seem to work, I only
got one response and we still in negotiation but I think I'm losing
I may try to make some 'informative papers' but I think most
people just ignore them these days, so I made a website
and I'm thinking about putting on google ad words, but
that would be a little expensive and I'm not sure it will
be enough. Could anyone give any tips on how to get
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it will get a little bit easier because I will get in contact with
a lot of people and if my make the right impression I may get more work.

but then - I think this fellow is the one who announced to us that "Linux was a LIE" - so I am not sure how he/she might feel about Open Source in general...

Installer for a Java Program

Hello, folks.
I've written an application that I feel is ready to show to others, and would like to provide it with an installer.
I need to check that JRE 1.4 is installed, install it if it isn't, install the application to a directory, set install/uninstall options in the control panel, and add a start menu item. (This will be a Windows-platform installer.)
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thanks,
Andrew

Hello All,
This is may be bit of a tangent, but hopefully it can be helpful regardless...
I'm looking into installer programs that are java friendly with the ability to generate a gui-based install program for multiple platforms. I went out and tried to find as many programs that match these specs (list below). Before I dive headlong into demo-sampling-mode - I was hoping folks would share any positive or negative experiences they've had with any of the apps listed below.
http://www.denova.com/ - DeNova
http://www.fawcette.com/Archives/premier/mgznarch/javapro/2000/06jun00/rv0006/rv30006.asp - InstallShield Java Edition 3.0
http://www.alphaworks.ibm.com/tech/beanbag - BeanBag
http://www.alphaworks.ibm.com/tech/installtoolkit - Install Toolkit for Java
http://www.jadcentral.com/codecentral/code_profile.jsp?category_ID=4&code_ID=112 - ITW Installer For Java Applications
http://www.zerog.com/ - InstallAnywhere (some free, some not)
http://www.gjt.org/info/design/autorad.shtml - AutoRad [GPL]
http://www.xenonsoft.demon.co.uk/products/freeinstaller/index.html - freeinstaller [Open Source]
http://www.izforge.com/izpack/ - IzPack [Open Source]
http://www.toolshed.com/download/installer/install.html - Java Self Installer [GPL]
http://liftoff.sourceforge.net/ - Lift-Off [GPL]
http://packlet.sourceforge.net/ - Packlet installer tool [Open Source, LGPL]
http://vainstall.sourceforge.net/ - VAInstall [GPL]
Comparisons:
http://www.zerog.com/products_pu_05.html
Cheers,
Enrique
cc comp.lang.java.softwaretools
cc forum.java.sun.com > Java Programming > Installer for a Java Program

Java Programming Resources for starting out

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