Notes: 

https://javajee.com/book/java-core-operators-decision-and-looping-constr...

Exercises

Module 3.1: Operators and scopes

1. Program with instance variable and local variable.

   1. Write a program with an instance variable and local variable with same name.

   2. Assign different values along with their declarations.

Notes: 

https://javajee.com/book/java-core-classes-objects-variables-and-methods

Module 2.1: Data Types and Variables

Exercises

1. Write a program with static, instance and local variables.

   1. Write a class that has 2 variables of type int: myStaticVar, myInstanceVar and myLocalVar as a static instance and local variable respectively.

Notes: 

https://javajee.com/book/java-101-getting-started-with-java

Excercises

1. Write a HelloWorld program. Write a simple program with a main method that prints Hello World.

2. Use package and import statement.

   1. Create a public class Hello1 that is part of a package com.javajee.package1.

      1. Add the standard main method that will be invoked by JVM.

Install different versions of JDK and JRE in local and switch between them easily.

Go to below jdk 14 downloads page at the URL https://www.oracle.com/java/technologies/javase/jdk14-archive-downloads.html. You can also reach this page by searching in google for the same. 

Click on the download symbol corresponding to your installer. Here it is macOS Installer.

Creating ArrayList

There are three constructors for creating an ArrayList:

1. When you create an ArrayList using the constructor ArrayList(), the internal array for storage is created with a size 10.

2. The constructor ArrayList(int initialCapacity) allows us to set the initial capacity.