Struts

- MVC pattern
- a filter should be added in web.xml to inform to redirect every request to struts.
- struts1 has struts-config.xml
- there are large differences between struts1 and struts2
- struts.xml contains action mappings i.e which request should be addressed by which class.
- Action class can extend ActionSource class to get validation and other features.
- Action class can implement ModelDriven to map the input parameters to a java class instance.
- Action class can also act as model.
- all the action class variables will be available in ValueStack
- by default 'execute' method of action class will be called.. this can be configured in struts xml config.

Java - some important/unknown/key facts

- main method is inherited by child class.
- if child class contains main method, then the main method of parent class (if contains) will become hidden.
- all static methods of parent class will be accessible from child class, if a static method with same signature as that of Parent class exists in Child class then the Parent class method will be hidden from Child class view.
- Overloading of main method is allowed but JVM always calls the one with 'String[] args' argument. other main methods will be like normal methods.
- if main method is not defined, till Java 6, JVM used to throw a RunTimeException as 'NoSuchMethod Error'. from Java7, it wil throw an error and suggests to define main method.
- till Java6, static blocks used to get execute before searching for main method. from Java7, static blocks wont get executed if class doesn't have main method.

Installing an obsolete java version on Linux

for example if you have java 8 and want to install java 7, get the rpm of java 7

and install it with rpm command with '--nodeps' option:

rpm -ivh /tmp/java-1.7.0-openjdk-1.7.0.75-2.5.4.2.fc20.x86_64.rpm --nodeps

after installation set your JAVA_HOME to 1.7.

list of java installations on your machine can be obtained through the below command:

alternatives --config java

Telugu Lali Patalu

1. vata patra sai ki varahala lali - Swathi Muthyam
2. Lali Jo Lali Jo - Indrudu Chandrudu
3. Pachani Chettu Okati - Ramu
4. Lali Lali - Damarukam
5. Rama Lali - Ramadasu (not from movie)
6. 

Sreemantham Patalu

Sitalu Yerugani - Chithram Bhalare Vichitram
Kadile Kalama - Pedarayudu
Seeta Seemantham - Sree Ramarajyam
Seeta Seemantham - Satyamevajayate

Shashtipurthi Patalu

aravai lo iravai vachindi - bhogimantalu - Athreya - 1981 - Ramesh Naidu
anuragam virisina roju - chinna kodalu - 1990
velugu rekhala varu - seetaramayya gari manavaralu

youtube playlist:  https://www.youtube.com/watch?v=VM0JH3jAKsg&list=PLi9sTuLQSOLNFMF9C1YKJKk5WWV_5FuPA

Travel Agents in Madras

Below is list of some travel agents in Madras (Chennai) who can offer visa services:

Oasis: 0442855 4021/3628/4239

International Travel House: +91 9811 101040

Madras Tours n Travellers: info@madrastravels.com or call us 044-4202 2244

New Sun International: 044-23719671/72/73/74/75

I have got German Tourist visa through Madras Tours n Travels.