I need some step by step tutorials/documents on developing Java web applications using Eclipse/apache.
appreciate directions/help.
I recommend you read a book instead:
This is probably the simplest way to get started. It really helped me with getting a grasp on how the directory structure and web.xml go together and make a web app. Eclipse is only a partner in your development, you really need to understand the underlying infrastructure no matter what framework you are using, and this book gives you a solid start.
There are some video tutorials available at http://eclipsetutorial.sourceforge.net/
The first tutorial begins with the absolute basics of setting up a workspace and getting started. It also shows the Welcome screen available under the help menu which has links to an overview, samples, and tutorials
As you've already installed Apache Tomcat. I assume you've not installed Java EE tools for Eclipse. If not, then First download Eclipse Java EE tools from Help > Software Updates > Available Software > Java EE developer Tools.
First way : is using Tomcat plugin with eclipse,for that you've to check this tutorial
Second way: If the Tomcat Plugin is not working with you then other alternative as follow Click on Click Window in menu> Preferences then click Server pane. Open Runtime Requirement pane. Add path for the tomcat directory. Click Ok. You're done with the settings.
Now you can create new projects from File >New >Projects. And start building servlets/jsp projects. Try learning from good books like "Head first: Servlets & JSP".
Hope this helps.
When you first start Eclipse there is a screen with tutorials right in the program. They are also accessible from the Help menu
Reminds me of that old joke:
Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.
Sounds like you have several things that you don't know: Eclipse, Tomcat, Java EE development, maybe JSPs, JSTL, WAR files, the list goes on.
My advice would be to strip things down to the bare bones and decompose the problem a bit.
Start by doing a simple servlet/JSP app talking to a database, without using Eclipse. See if you can compile on the command line, create the WAR file, package it properly, and deploy it on Tomcat.
If you can manage that, then work Eclipse into the mix. Don't worry about running Tomcat inside Eclipse at first. You can go back and forth until the IDE is comfortable.
But you're asking a lot when you say you'd like step by step instructions. You're tackling a very big problem.
DZone REFCARZ might be helpful, there's one for eclipse:
Getting Started with Eclipse
Related
some questions:
i unzipped the full offline distribution (400+ mb) to C:\Program Files\Play2.4
Unzipping created a directory "activator-dist-1.3.5" within which are bin, lib, repository, templates, etc.
i assume i put the contents of activator-dist-1.3.5 into C:\Program Files\Play2.4?
i setup an user environment variable name: PLAY_HOME, value: C:\Program Files\Play2.4 and then added ;%PLAY_HOME% to the end of the system variable "Path"
i've tried calling "play" from dos both with and without "activator-dist-1.3.5" directory and both return "play is not recognized as an internal or external command"
some other answers to this question mention the root play dir should have "play.bat" but all i see is "activator.bat"
i read readme.html and opened activator.bat, it launched a dos window, which promptly closed.
http://localhost:8888/home goes nowhere.
For those who don't yet speak "play", what is Activator UI?
Since play 2.3, the play command was replaced with the activator command. Take a look to this.
If you put the folder activator-dist-1.3.5 into C:\Program Files\Play2.4 then your enviroment variable must be set to C:\Program Files\Play2.4\activator-dist-1.3.5\bin. You can also put that path directly into the PATH environment variable.
Activator UI is a web aplication that helps you create play applications. You can think of it as the graphical version of the activator command line tool. Here is the documentation
ok, here is what ive figured out:
the environment variable has to point to the bin directory (thx Victor)
from w/in dos window (the "console"), cd to the the root play dir (not bin) and type "activator" not "play"
all other documentation and stackoverflow answers refer to the pre 2.3 versions of play and will not help you.
then a bunch of stuff happens: online maven call (even though i downloaded the offline dist) and a bunch of calls to the play root dir/repository for jars.
of course localhost:9000 and localhost:8888 still get connection refused.
now if you manually open activator.bat in root play dir it launches another dos window, makes a network call (firewall allow) and opens a browser win to: http://127.0.0.1:8888/home which is some sort of "welcome to activator" screen with sample apps .. sort of like the tomcat mngt page.
i hope to only define and start/stop apps from w/in my IDE, so eventually i'll be looking for how to disable this default activator behavior
next up.. how to setup intelliJ:
i went here: https://www.playframework.com/documentation/2.4.x/IDE and defined an SBt task instead of a play task in run/debug configurations of my new project.
now project start makes maven calls for jars but then dies on:
[error] Server access Error: Connection timed out: connect url=...repo.typesafe.com/typesafe/ivy-releases/org.apache/apache/14/jars/apache.jar
stopping and restarting did a bunch more maven calls (really slow) but eventually "done updating" and localhost:9000/ now shows welcome screen :)
not completely painless but certainly simpler than a spring app
onEdit:
sorry play, but i've moved to spring boot because:
i create new projects by copying existing and making changes. its much faster than creating a new proj from scratch. Thus the activator thing (which does not work) is not useful to me and just represents a security prob (like apache web management screen) that need be disabled
no where is there a clear, concise and complete list of settings to get play running correctly in intelliJ (the 2nd most popular IDE avail)
asynchronous, non-blocking and micro services are not unique to play and spring (or others) can be made to work in a similar fashion
We have so many technologies to learn and it does'nt make sense to invest a lot of time mastering one with limited corporate buy in
i want to stop/start from w/in my IDE and not have to have a bunch of dos windows open. i know this is possible in play, but documentation makes it feel as though its not the preferred method
although i appreciate that the play directory structure is less flexible, its still not the command/controller/manager/dao/model world that is the most often seen for java apps
i investigated play because spring was getting to the point of having too many ways to configure too many things in too many places that were documented differently across versions. Also, large sub-projects in spring (like security) garnered their own books on the subject because they were so complex to figure out. At the end of the day, the level of security (for example) needed (or the manner in was implemented) went beyond what avail via simple configuration and after all the customization we were left wondering whether spring security just got in the way instead of providing real time saving and usefulness.
Spring boot hopes to help in that its an opinionated configuration where a collection of configuration basic best practices are encouraged/enforced.
and lets re real.. time saving on a slightly more concise language or a slightly different proj structure or dynamic class loading is not whats important.
The majority of time spent on projects, by far, is the time spent researching, thinking and investigating architectures, technologies, databases and presentation schemes.
I prob only spend 20% of my time coding and 80% trying to figure out the strategic vision needed to create software that has maximum usefulness and is "future friendly" (not needing to be re-coded every 3 years)
so far i've deleted my project and recreated about 10 times.. trying diff settings, still w/ no luck.
checking google play mailing group, i tried to create via activator ui.. but could not launch activator until i deleted the RUNNING_PID file in the play root dir
now i'm back at: http://127.0.0.1:8888/home to create a new app
at create new proj i get error: "cannot find project/build.properties".
lets try adding a blank build.properties where its expected.. nope, error: "destination already has files in it"
not that it really matters, sample templates have no knowledge of IDE and thus provide no insight into how to configure IJ. New\Import project does not list IJ as an option in choosing an external model
...whatever...
"Mr McKitrick.. after careful consideration ..."
trying to get working in IJ 14 ultimate:
jamesward.com has a tutorial and video, but its for older versions of IJ and play and only covers a small % of necc. configurations.
jetbrains has a tutorial but it also only covers play 2 and older IJ which does not translate to 14 and 2.4
https://www.playframework.com/documentation/2.4.x/IDE helps, but just w/ setting up an SBT Task
all the other project settings are a mystery for example:
project source need be defined to even show your project directories in proj tree
facet setup add does not list scala as option
why is scala lib pointing to users[me].ivy2\cache..? (i would think all necc libs are w/in play root\lib
should i setup a global lib pointed to play\lib?
run/debug config need env var pointed to PLAY_HOME?
basically all classes are not being resolved in IJ editor.
project structure lists 109 problems like:
Library SBT: joda-time:joda-time:2.3:jar is not used [Fix]
seems like i'm missing a global lib definition.
i'm able to get my app running, but i dont know how useful its going to be when the 2nd most popular IDE throws red bars at every import: "play."
For quite a while I have worked in the LAMP stack. But now I need to work on a project in java ,jsp and servlets(Tomcat Server) I have never worked in java ,jsp before. So I need some help in setting up the stuff in my laptop so that i can execute a java and jsp script in my browser. I know there are numerous links in the web that provide tutorials. But could someone point me to good one where it shows all the steps:for eg:
Installing Tomcat
Installing java
compiling,build,test java,jsp,servlets in the browser
Or anything else that would help me get started and learn the right way to develop web applications
I think this tutorial from Lars Vogel is a comprehensive one and is quite up-to-date.
The only point not covered is "installing java", that should be your first step. This article can help you in getting used to JDK, JRE, JVM, etc.
I am a C# programmer. I want to learn Java to implement my windows application. But I don't know what IDE and what tools can help me.
Please help me to choose best platform and IDE and other tools.
Edit:
Thank You For Your Helping. And What is Best Ebooks and UserGuids to Learn java.
There are really three big IDE's that people use:
Eclipse
Netbeans
Intellij IDEA (my personal favorite)
The online Java Tutorials are a great place to start learning the language.
Eclipse or NetBeans will be your best bet for an IDE (in my options)
Set up Git for source control
Use Maven to manage your builds (if you're getting that complex)
First, download the java jdk.
http://www.java.com/en/download/index.jsp
Later, install an IDE. I suggest you to use Eclipse, I like it:
http://www.eclipse.org/
Another one very used is Netbeans:
http://netbeans.org/
Have Fun!
There's a short tutorial along with a great comparison table here. It's a Java tutorial aimed at C# developers.
Java is very close to C# you don't need more than eclipse (Actually I prefer it more than Netbeans) and search for any syntax you want in the Java documentation
JDK
First you need to download Java
development kit(J2SE 6) from Sun's
website
IDEs
eclipse or netbeans
Books
If you are planning to use Swing for
windows application - you may read
sun's tutorial
http://java.sun.com/docs/books/tutorial/uiswing/
Or if youa re a serious Java learner
get the Thinking in Java book from
here
http://www.odioworks.com/46-Bruce_Eckel%27s_Free_Electronic_Books.html
By the way, welcome to Java's world :)
Welcome to Java World. You can either use Swing or SWT for windows form like development. Here is a good link to get started with SWT http://www.developer.com/java/other/article.php/3330861/SWT-Programming-with-Eclipse.htm .
On top of what the other user's have already recommended, I would suggest getting familiarized with a J2EE container. It will come in handy in the future. Here is a link on what it is. JBOSS container is free and a pretty good one to use in my opinion. You can download it here.
For Windows app with SWT / AWT gui you should know there are plugins for IDE that help you to create your gui. Check for exemple Matisse for NetBeans.
Once you have Eclipse up and running, you should look at the Visual Editor Project plugin at Eclipse for developing windows applications. Hand-coding all of the SWT stuff is a big pain and hence the plugin will help.
netbensIDE will help u
I had been using Netbeans all the while to develop Swing application. So far, I am a Happy Netbeans User
Currently, I had a project (GWT, J2EE and Swing), which I need to use Eclipse (Please do not ask Why)
Here is the step I had been taken.
Download Eclipse IDE for Java EE Developers (190 MB) from http://www.eclipse.org/downloads/ I thought this should be the correct choice, as I see most features are found in that edition http://www.eclipse.org/downloads/packages/compare-packages
After struggling a while to get use to the user interface of Eclipse, I still cannot find a Visual GUI Editor!
After doing some Googling, I realize I need to install something called Plugins
However, tones of plugins which had similar features has confused me, as I found
http://www.cloudgarden.com/jigloo/index.html
http://www.eclipse.org/vep/WebContent/main.php
http://code.google.com/p/visualswing4eclipse/
This makes me even more confuse? Which plugin I should use to develop a Swing based application? Most of them seems not up-to-dated. Or, is there any complete bundle I can download, where 1 click, will install all the necessary Swing development tools for me?
I just miss my Netbeans :( I really appreciate their team, who make the installation work so easy. One click button install, all the necessary tools just come to me
Eclipse users typically program UI by hand.
I have just started to try NetBeans. I created a new Java Desktop Application project, and it automatically added the JDesktop "appframework-1.0.3.jar" library. However, whenever I try to view its source, the command fails. I tried searching for it online, but I couldn't find it. So where can I download the source code for the "Swing Application Framework" (appframework.jar and swing-worker.jar)?
http://java.net/projects/appframework/sources/svn/show/trunk/AppFramework
the link and the source is too old and hard to be found,luckly i used 30 min find it in :
https://java.net/projects/appframework/sources/svn/show/trunk/www/downloads?rev=151
you can see the "source","jar","doc" of appframework-1.0.3.jar at the ending.
If you came to this question, because you couldn't find "Swing Application Framework" (appframework.jar) using Tools -> Plugins -> Available Plugins My Answer may help you.
First If you just need appframework.jar please get it from the below link.
If you already click the links in other answers you can Swing Application Framework has migrated from java.net and hard to find where it is migrated
https://mvnrepository.com/artifact/net.java.dev.appframework/appframework/1.03
If you just need Netbeans for Swing Application developments, I suggest you use Netbeans 8.0.2 version. As I experienced Latest version does not have the exact IDE which uses in Video Tutorials, Other versions may not properly work with Swing. As per my experience below version will serve you right when it comes to Java Swing Application developments
https://netbeans.org/downloads/old/8.0.2/