We will discuss about Java 8 Lambdas and streams.

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.

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.

ArrayList is a resizable-array implementation of the List interface.

Traversing arrays

Traversing an array is the process of visiting each element of an array.

Two common ways to traverse an array are:

• simple for loop / while loop

• for-each loop

Example array

int[] myArray = {1,2,3,4,5}