Showing posts with label Examples. Show all posts
Showing posts with label Examples. Show all posts

Friday, May 17, 2013

Setup SSL in Tomcat

Setup SSL in Tomcat

1. Create certificate file(Key store)
We can create keystore file using java "keytool" command utility
C:\Program Files\Java\jdk1.6.0_21\bin>keytool -genkey -alias yash -keypass yash123 -keystore mycertificate.cer -storepass yash123
what is your first and last name? yash jadhav
what is the name of your organizational unit? SHRI RAM
what is the name of your organization? SHRI RAM
what is the name of your city or locality? Hyderabad
what is the name of your state or Province? Andhra Pradesh
what is the two-letter country code for this unit? IN
yes

2. Copy the myCertification.cer file into tomcat/conf

3. Modify the Server.xml file in conf folder
 <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
               maxThreads="150" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" keystoreFile="conf/myCertificate.cer" keystorePass="yash123"/>
             
4. Test tomcat(start tomcat)
    https://localhost:8443/


Sometimes you may get below exception:keytool error: java.io.FileNotFoundException: mycertificate.cer <Access Denied>

Solution:
This could happen if you are not running the command prompt in administrator mode. If you are using windows7, go to START -> ALL PROGRAMS -> ACCESSORIES -> right click on command prompt and say run as administrator


Follow all the above steps(1-4).

Thursday, May 9, 2013

Installing Tomcat as a Windows Service

Installing Tomcat as a Windows Service

Download Tomcat 7
http://tomcat.apache.org/download-70.cgi
Core -> 32-bit Windows zip


To install tomcat as a windows service
C:\java\apache-tomcat-7.0.39\bin>service install myTomcatServiceName

To uninstall tomcat as a windows service
C:\java\apache-tomcat-7.0.39\bin>service uninstall myTomcatServiceName


C:\java\apache-tomcat-7.0.39\bin>sc start myTomcatServiceName
C:\java\apache-tomcat-7.0.39\bin>sc stop myTomcatServiceName

C:\java\apache-tomcat-7.0.39\bin>tomcat7 //TS myTomcatServiceName


Command-Line Parameters for Tomcat6.exe

Here is an overview of the command line parameters available for use with Tomcat6.exe. The default syntax for all these commands is:

C:\>tomcat6 //COMMAND//Tomcat6<
If you configured a custom service name when you installed the service, use this in place of "Tomcat6" in the command.

    //IS// - Install service. Used during the initial installation only.
    //US// - Update service. Used to change service parameters after installation.
    //SS// - Stop Service. Stops the Tomcat Windows Service, if running.
    //RS// - Run Service. Manually start the Tomcat service from the command line.
    //TS// - Terminal Service. Runs the service as a console application. Tomcat6 runs this command by default if no other parameter is specified. This command can be used in conjunction with other parameters to provide debug functionality for the Tomcat service.
    //DS// - Delete Service - Stops the service if it is running, and then deletes it.


Command Documentation
http://www.mulesoft.com/tomcat-service
https://www.youtube.com/watch?v=pfZU66hzsQ0

Tuesday, May 7, 2013

Useful Eclipse Shortcut Keys



Useful Eclipse Shortcut Keys

Shortcut keys make life that little bit quicker! They aid you in working faster and become very handy when programming in Eclipse.
For a full list of shortcuts, in Eclipse 3.1 and above you can press Ctrl+Shift+L for a handy popup.


Shortcuts:

Ctrl+Shift+T
Find Java Type
Start typing the name and the list gets smaller. Try typing the capital letters of the class only (e.g. type "CME" to find "ConcurrentModificationException")

Ctrl+Shift+R
Find Resource
Use this to look for XML files, text files, or files of any other type. which are in your workspace.

Ctrl+E
Open Editor Drop-Down
Presents a popup window listing currently opened files. Start typing to limit the list or simply use the down arrow key.

Ctrl+O
Quick Outline
Use this to find a method or a member variable in a class. Start typing to limit the choices. Press Ctrl+O a second time to include inherited methods.

Ctrl+Space
Content Assist
Context sensitive content completion suggestions while editing Java code.

Ctrl+Shift+Space
Context Information
If typing a method call with several parameters use this to show the applicable parameter types. The current parameter where the cursor is will be shown in bold.

Ctrl+Shift+O
Organize Imports
After typing a class name use this shortcut to insert an import statement. This works if multiple class names haven't been imported too.

F3
Open Declaration
Drills down to the declaration of the type, method, or variable the cursor is on. This works much like a browser hyperlink.

Alt+Left
Backward History
This works like a browser's Back button.

Alt+Right
Forward History
This works like a browser's Forward button

Ctrl+L
Go to Line
Go to a specific line number.

F4
Open Type Hierarchy
Show the type hierarchy (downward tree) or the supertype hierarchy (upward tree).

Ctrl+Alt+H
Open Call Hierarchy
Show where a method is called from. In the Call Hierarchy view keep expanding the tree to continue tracing the call chain.

Ctrl+H
Open Search Dialog
Opens a search dialog with extensive search options for Java packages, types, methods, and fields.

Alt+Shift+R
Rename - Refactoring
Use this to rename type, method, or field. All existing references will be refactored as well.

Alt+Shift+L
Extract Local Variable
Use this to create a local variable from the selected expression. This is useful for breaking up larger expressions to avoid long lines.

Alt+Shift+M
Extract Method
Use this to extract a new method from existing code. The parameter list and return type will be automatically created.

Alt+Shift+Up
Alt+Shift+Down
Alt+Shift+Left
Alt+Shift+Right

Select Enclosing Element / Restore Last Selection / Select Previous Element /
Select Next Element

Useful for selecting context-sensitive blocks (e.g. surrounding loop, method, class, etc.)

Ctrl+Up
Ctrl+Down

Scroll Line Up / Scroll Line Down
Very handy if you want to scroll by 1 line without changing your cursor position or using the mouse.

Ctrl+Shift+U
Alt+Shift+U

Go to Previous Member / Go to Next Member
Great for stepping down through the methods of a Java source file.

Ctrl+Shift+U
Alt+Shift+U

Show Occurrences in File / Remove Occurrences Annotations
Use this to search within the same file - useful for occurrences of private fields and methods.

Ctrl+Shift+P
Go to Matching Bracket
Helps to find the closing bracket of lengthly if-else statements.

Ctrl+J
Ctrl+Shift+J

Incremental Find / Reverse Incremental Find
The first matching occurrence is shown with each typed letter. Press again and the next matching occurrence is shown.

Shift+Enter
Ctrl+Shift+Enter

Insert Line Below / Insert Line Above
Insert a line above or below the current line.

Ctrl+/
Ctrl+\

Add Block Comment / Remove Block Comment
Comment in/out blocks of code with a key stroke.

Ctrl+M
Maximize Active View or Editor
Maximize the current view or editor at the expense of all other currently shown views. Press again to restore to normal view.

Ctrl+F6
Ctrl+F7
Ctrl+F8

Next Editor / Next View / Next Perspective
Learn these to switch among edited files, open views and perspectives.

Ctrl+Alt+Up
Ctrl+Alt+Down

Duplicate Lines / Copy Lines
Doesn't seem like it at first but a great shortcut once you learn to use it. Instead of select, copy and paste simply select and duplicate without affecting the clipboard.

Alt+/
Word Completion
This is excellent for code editing or writing plain help files with variables and other words having no English language equivalents. The word completion is based on the set of words already present in the current file.

Ctrl+I
Correct Indentation
Select a block of Java code or an entire class file and use this shortcut to correct its indentation.

Wednesday, May 1, 2013

Internationalization (i18n)


import java.util.*;

public class I18NSample {

   static public void main(String[] args) {


      String language = new String("fr");
      String country = new String("FR");
      Locale currentLocale = new Locale(language, country);
      ResourceBundle messages = ResourceBundle.getBundle("MessagesBundle",currentLocale);


      System.out.println(messages.getString("greetings"));
      System.out.println(messages.getString("inquiry"));
      System.out.println(messages.getString("farewell"));

   }

 /*
MessagesBundle_en_US.properties
greetings = Hello.
farewell = Goodbye.
inquiry = How are you?

MessagesBundle_de_DE.properties
greetings = Hallo.
farewell = Tschüß.
inquiry = Wie geht's?

MessagesBundle_fr_FR.properties
greetings = Bonjour.
farewell = Au revoir.
inquiry = Comment allez-vous?
 */
 
}