Placement Notes - Page 5

equals() and hashCode() in Java

Two objects that are equal must have the same hash code. Breaking that contract quietly breaks every hash based collection.

Java

Polymorphism in Java

One reference type, many possible behaviours. Polymorphism is what lets code work with a supertype and stay correct as new subtypes appear.

Java

Method Overriding and super in Java

A subclass replaces inherited behaviour by declaring the same signature, and the JVM chooses the version at runtime from the actual object.

Java

Inheritance in Java

Inheritance lets a subclass acquire the members of a superclass, creating an is-a relationship that polymorphism is built on.

Java

Strings in Java

String is an immutable object with a shared literal pool, and both facts explain how comparison, concatenation and performance behave.

Java

Pass by Value in Java

Java always passes arguments by value. For objects the value copied is the reference, which explains every result that looks like pass by reference.

Java

Introduction to Java

Java is a statically typed, object oriented language that compiles to bytecode and runs on a virtual machine, which is what makes it portable.

HTML

Final HTML Assessment

Forty questions covering the whole path, from document structure to SEO and accessibility. Sample questions only - no answers, no submission.

HTML

Project Exams

Five larger assessments where the deliverable is a working site. Requirements, constraints and a rubric for each.

HTML

Practical Exam: Building From Requirements

Six timed tasks in the format a practical assessment or a technical test actually uses: a written requirement, a time limit and a marking scheme.

HTML

Elements, Tags and Attributes: The Vocabulary of HTML

Tag, element and attribute are three different things, and interviews test the difference constantly. Learn the anatomy, the void elements, boolean at...