Search

androidtour

Month

August 2015

final keyword regarding variable and method

“Final” variable is a constant, once one variable declare with final than during whole program can not change this variable value.

EX. final public static int a = 5;

After declare this statement you can not change the value of variable a.

Final Method

You can not overridden in any subclass. you can not use this final declare value to subclass.

Advertisements

Reverse Engineering

How to convert APK to Sourcecode

Classes in JAVA for Data structure

Classes

ArrayList

LinkedList

HashSet

LinkedHashSet

TreeSet

PriorityQueue

ArrayDeque

EnumSet

For Retrieve data from this classes

Using Intrator

Using for loop

Interfaces in JAVA for Data Structure

Collection

List

Set

SortedSet

NavigableSet

Queue

Dequeue

 

Before Android

Before become expert in Android , some topics that you must know,

  1. Basics of JAVA
  2. Data Structure
  3. Collection Classes and Interface

 

 

Basic Topics for Interview for Computer Student

Database

Normalization Techniques

Functional Dependency

Relational Dependency

Data Structure

Stack 

Queue

Sorting Method and Its time complexity

Searching Techniques

Linked List

Algorithm and Complexity

Languages

C

C++

JAVA

Regarding language 

Difference between Procedure oriented and Object oriented Programming

Encapsulation

Abstraction

Polymorphisum

Inheritance

JVM JDK JRE

Compiler Interpreter

Assembler

Cross Compiler

Compiling Process of Expression (Compiler Design)

Difference between JDK JRE JVM

JVM(Java Virtual Machine)

JRE(Java Runtime Environment)

JDK(Java Development Kit )

Functional Dependency in Database (Normalization)

Goal of Normalization is to reduce Redundancy.

Four Technique

  1. First Normal Form
  2. Second Normal Form
  3. Third Normal Form
  4. BCNF (Boyce and Codd Normal Form)

Master Information of Data Structure and Algorithm

1. What is Complexity?

Complexity is the Measurement of Analysis of Algorithm.

2. What is Hashing?

In terms of Database, Hashing is a method of sorting and indexing data. The idea behind hashing is to allow large amounts of data  to be indexed using keywords or keys commonly created by complex formulas. Hashing allows for a large amount of information to be searched and listed.

In terms of  security, hashing is a method of taking data, encrypting it, and creating unpredictable, irreversible output. There are many different hashing algorithms. MD2, MD5, SHA, and SHA-1 are examples of hashing algorithms.

 

Blog at WordPress.com.

Up ↑