Addition or Sum of 2x2 matrix using Arrays in java

We know that arrays are different types, as usual one dimensional array, two dimensional array, three and multi (mxn) dimensional arrays.
In two dimensional arrays we need 2x2 array.

A 2x2 matrix is a rectangular often square array of numbers having 2 columns and 2 rows, or expressions which can be evaluated to numbers. The dimensions m x n refer to the number of rows (m) and columns (n) respectively.

We can declare the one dimensional array as:

int[] myArray = {0,1,2,3};

and two dimensional array looks like this:

 int[][] myArray = { {0,1,2,3}, {3,2,1,0}, {3,5,6,1}, {3,8,3,4} };

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Nataraz sir moving from Sathya Techologies to Durga Soft

The Great Nataraz sir trained more than 10,000 students in Java technologies in 9 years  from Sathya Technologies, now he decided to stop his valuable services from Sathya Technologies.

He made a contract with Durga Software Solutions to train IT Professionals from May 1st week 2013. The current batches which are running those will be completed by April month. Other wise the administration will decide what to take further steps.

All are thankful to Sathya Technologies , by providing such a good classes and good environment to run the classes and you made many professionals in java with Nataraz Sir.

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Importance of toString() in java

Object class of Java is having predefined toString() method. This method by default Object class calls implicitly when an object created. Overriding toString manually is nothing but implementing this method in our class.The java toString() method is used when we need a string representation of an object. It is defined in Object class.

The toString() method is useful for debugging. By default, when an object is printed out in a print stream like System.out, the toString() method of the object is automatically called.
While develping the code the developers used to check the object properties are getting through the object or not. For this print statement will be useful to quick test in the console.

public String toString()
Returns: a string representation of the object.

Let us take a Person class and try to print the person object using the System.out.println() statement.

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How to sort an ArrayList

Sorting any ArrayList is pretty simple. Using Collections.sort( ) method we can sort the ArrayList. Collections class having all the static methods, we can use those methods directly along with the class name. These methods return the object as type Collection.

The important methods to synchronize the List, Set and Map as

synchronizedList(List<T> list)
synchronizedSet(Set<T> s)
synchronizedMap(Map<K,V> m) 

A simple program to sort an ArrayList

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Starting Struts2 by Ian Roughley eBook Download

Struts2 is the latest manifestation of the popular Struts Java web application framework. Like its predecessor, its goals are to make web application development faster, easier and more productive than ever before. Despite new languages and new techniques, the action-base MVC framework is still a viable and effective option for modern web application development.

Within this book you will find everything you need to get up and running using Struts2 - from the architecture and configuration, to implementing actions and the supporting infrastructure such as validation and internationalization.

The concepts covered by this book:

• WHERE STRUTS2 FITS INTO THE WEB PARADIGM
• CORE COMPONENTS
• ARCHITECTURAL GOALS
• PRODUCTIVITY TIPS
• INTEGRATING WITH OTHER TECHNOLOGIES

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Configure Tomcat in MyEclipse 9.1

Once the Tomcat 6.0 installation is done in your local system, configure it in MyEclipse IDE.
Follow the below steps to configure Tomcat 6.0 in your MyEclipse.
Step1: Go to MyEclipse menu bar and select Window menu from there select preferences.

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