SummerTraining2020

In this repository, I will daily add on the code that I practice as a part of my summer training on Java, Java Server Pages, Angular framework with HTML, CSS, Javascript, TypeScript along with Mysql

I will regularly update here what I have learnt daily.

Day 1:

• Learnt What is Java,
• Why it is platform independent,
• Installation of java,
• Running a first program of java

Day 2:

• Learnt escape sequences
• Naming conventions in Java
• Print and println functions and System class
• Datatypes, declaration and initialization of variables
• Types of variables in Java
• Scanner class and how to use it to take input
• Type of operators and what is OOPs and concatenation

Day 3:

• We studied about Encapsulation
• Classes and objects
• Access modifiers -private and public
• And how they affect the programs by implementing programs
• And setter, getter methods
• This keyword, reference variable
• Default and parametrised constructors
• Default values

Day 4:

• Implemented a demo simulation
• Made 3 classes: Student, Exam and Result
• Used HAS A and USE A relationship between them

Day 5:

• IS A Relationship
• Inheritance
• Types of Inheritance in Java
• Implementing Single Inheritance
• Types of Methods
  • Own Method
  • Inherit Method
  • Overrride Method
  • Override Method +super keyword use
• Sequence of method call when object creation happens in inheritance
• super and this keywords

Day 6:

• Implementing another simulation
• Made 3 classes:Person, Faculty and Student
• Used IS A relationship i.e. inheritance here
• Usage of final keyword
• Using base class reference variable
• Introduction to Polymorphism

Day 7:

• Understanding Run time polymorphism by example and implementation
• Upcasting and Downcasting
• instanceOf keyword

Day 8:

• Abstract class in detail
• static keyword in detail
• main method explanation

Day 9:

• main method further explanation
• Interface
• static dependency
• dynamic dependency and parametrised constructor
• Coupling and Dependency
• Injection and Dependency Injection

Day 20:

• Started with Web Application Project
• Made tables in eshop database
• Made a new project in Netbeans
• Downloaded and setup a web template in project and corrected all its paths to make it working
• Created blocks/header.jsp and blocks/footer.jsp and index.jsp
• Created dao,dto and controller packages
• Created BaseDao interface, DBConnection class
• Category Class in dao and implemented all the abstract methods

Day 21:

• Added a input form to category.jsp
• Added SaveCategoryServlet in Controller package to save the data
• Added status message for the request success or failure
• Added a table to display the categories
• Corrected the numbering of categories
• Learnt about AJAX
• Implemented basic AJAX query using Testing.TestingServlet and testing.html

Day 22:

• Created a new project AJAX DEMO, added Mysql and Gson JAR file to it
• Added a DemoServlet for testing the working with a fun1 function in index.html
• Created database sample1 and table student and populated it with entries
• Made a table like structure in index.html
• Implemented a SearchServlet for onkey searching of name
• Learnt about XML, RSS and JSON
• Made a Student class for creating objects of database records
• converted Student objects arraylist to JSON and displayed it on screen

Day 23:

• Displayed Data in Table in AJAX DEMO project
• Implemented search feature in Category.jsp using jquery,ajax, CheckCategoryServlet.java and CategoryDao.java
• Made a updatecategory.jsp
• Implemented UpdateCategoryServlet to handle the backend
• Made a SubCategory.java, SubCategoryDao.java, subcategory.jsp
• Added Category select list to subcategory.jsp
• Made updatesubcategory.jsp , UpdateSubCategoryServlet.java
• Finally made CheckSubCategoryServlet.java and switched on the ajax

Day 24:

• Made product class, added its getter,setter and constructors
• Made ProductDao.java and implemented various functions in it
• Made product.jsp, added CategoryList to it
• Implemented GetSubCateServlet.java to bring subcategories according to Category
• Made SaveProductServlet.java so that Products can be saved
• Made the Product Table working

Day 27:

• .ht acess file
• MVC2 architecture in short
• Little bit about Apache Kafka by an example of GPS tracking application
• Brief Intro of Angular,React, MEAN ,MERN Stack and databases

Day 28:

• Deploying WAR file to localhost glassfish server without using Netbeans for deploying
• Deploying the Web Application to remote AWS EC2 machine , so it can be accessed globally

Day 29:

• Angular JS vs Angular in short
• Angular short description
• DOM
• DOM Manipulation accessing elements
• Changing innerHTML properties
• Adding new tags using innerHTML property to list
• Addition Program using DOM Manipulation
• Arithmetic Operation Program using radio button , id tag and DOM manipulation

Day 30:

• To manage radio buttons value using function for processing
• How to declare global variables using onload event in body and functions
• To manipulate content of DOM using TagName and ClassName
• Javascript Object
• Array of Objects
• Nested Objects
• JSON Parse and Stringify
• Functions inside javascript objects
• Task discussion

Day 31:

• About V8 Engine
• About Node.js
• Node.js Installation
• First Node.js program
• Function and reference variable
• Passing Function to a function
• Creating Anonymous function and passing it to a function
• Creating functions inside functions
• Exporting a string from a file for other files
• Exporting a function
• Exporting many functions
• npm init and package.json
• installing modules in node.js

Day 32:

• About ECMAScript, ES6 versions and Transpiler
• Local and Global scope
• let keyword
• const keyword
• strict keyword
• use of 'in' and 'for' for accessing elements in array and object
• Creating a webserver in node.js
• Discussion about Multithreading
  • In languages like Java,PHP & its limitations
  • Blocking Pattern
• Node.js as a single threaded environment

Day 33:

• Blocking Pattern
• Blocking Pattern using code
• Javascript function objects
• methods inside fucntion objects
• exporting function object to be created
• Exporting a readymade function object
• Javascript arrays
• Different operations and methods on array

Day 34:

• Installing Angular
• Checking Angular Installation
• Creating first Angular app with settings
• Running first Angular app
• Copy Paste technique for making Angular apps to save Internet data
• Understanding Angular app code structure

Day 35:

• Static Typing in TypeScript
• Class,Constructor and Objects in TypeScript
• Inheritance in TypeScript
• Interface in TypeScript
• Exporting and importing classes in TypeScript
• Understanding new tags in project/index.html i.e. and
• Understanding app.module.ts
• Component Structure in Angular
• Using variables in html in Angular
• ngFor loops in Angular
• Functions and events in Angular

Day 36:

• If statements in Angular
• Using global and local css
• One way Binding in Angular using Variables and using hash id
• Creating new Components in Angular
• Demo of new Component using one way binding
• Shortcut command to create component
• One way binding using NgModel
• Introduction to 2 way binding

Day 37:

• Using constructors to make private variables
• 1 way binding and 2 way binding implementation
• Calculate Component Implementation
• Using ngModel and form for taking bulk data
• Multi level heirarchy of components (app->calculate->reg)
• Data flow from parent to child component
  • Using Input decorator
  • Passing data even to the grandchild component
• Data flow from child to parent component
• Using Output and EventEmitter