Java Features

• Platform Independence: Write Once, Run Anywhere
• Verbose, Clear Syntax
• Garbage Collection
  • Finalize
• Multithreading
• Reflection

Object Oriented Programming

• Polymorphism
  • Dynamic Binding
  • Overloading
  • Overriding
• Encapsulation
  • Access Modifiers
• Inheritance
  • extends
• Abstraction
  • Interfaces
  • Abstract Classes

Tools

• JVM
  • JRE vs JDK
  • Stack vs Heap
  • public static void main(String[] args)
• Git
  • Commands: add, push, pull, commit, clone
• Gradle
  • Build Scripts

Syntax

• Constructors, Methods, and Fields
• Variable Scopes
  • class/static
  • instance/object
  • method/parameter
  • local/block
• Control Statements: If, If Else, Else, While, Do-While, For, For-each, Switch
• Arrays, varargs
• Package & Import
• Access Modfiers
• Primitive Types: byte, short, int, long, char, boolean, float, double
• Reference Types: class, enum, interface, array
• Exception Handling
  • try/catch/finally
  • try-with-resources
  • Checked vs Unchecked Exceptions
• Method Overloading and Overriding
• Interfaces
  • Functional & Marker Interfaces
  • Default fields & methods
• Abstract Class
• Anonymous Class
• Lambdas
• Generics

Standard Library

• Object API
  • toString()
  • hashcode()
  • equals()
• String API
  • String immutability
  • StringBuilder vs StringBuffer
  • String Pool
• Wrapper Classes
• Reflection API
• IO
  • System.out.println()
  • Scanner
• Serialization
• Collection API
  • collection vs. Collection vs. Collections
  • Map
    • Hashtable
    • HashMap
  • List, Set, Queue, Deque
    • ArrayList, TreeSet
  • Iterable vs Iterator
  • Comparable vs Comparator
• Thread API
  • Runnable interface vs Thread class
  • Synchronized
  • States of Threads
  • Thread Methods
  • Deadlock/Starvation
  • Producer/Consumer Problem

Paired Programming

• Roles
• Process
• Benefits

Testing

• Levels of Testing
  • Unit Tests
  • Integration Tests
  • System Tests
  • Acceptance Tests
• TDD
  • Red/Green Testing
• JUnit
  • Assert Methods
  • Annotations
• Mockito
  • Mock Objects

Design patterns

• Singleton
• Factory

OWASP

• OWASP Top 10
• Insufficient Logging & Monitoring