Test 1 Review

Logistics:

50 minute exam

Closed book / closed notes

No cheating / no make-up exam

Responsible for:

material in chapters 1 - 3 of Jia text

overheads

concepts discussed in class

OO concepts from first two programming assignments

Topics:

Object Oriented vs. Process Oriented, vocabulary

maintainability factors

abstraction, model, methodology

software phases

Java and Java Virtual Machine

Java features (object-oriented, distributed, platform independent)

Java Byte-code

Java Virtual Machine concept versus compilation of C code (portability)

Object Oriented thinking

object vs. process

objects: states, services, features

classes: structure (a way to organize your thoughts)

class graphical notation (UML):  how to represent classes (rectangles) at different levels of detail (what you can write inside the rectangles), relationships between classes, especially inheritance and implementation (solid/dashed lines, triangles)

Object Oriented Paradigms

Encapsulation

Polymorphism , Dynamic Binding

Inheritance (notion of classes that extend within a hierarchy)

Interfaces (anywhere in hierarchy from which classes may implement)

Hierarchies, Is-a and Has-a relationships

Java Language

• Applets vs Applications
• Variables (references versus primitives)
• special reference "this."
• Naming conventions (class names begin with upper case letter; objects lower case)
• Primitive types (e.g., int, double) and implicit conversions
• Wrapper classes (e.g., Integer, Double)
• Casting (explicit conversions)
• Decisions, Nested Decisions, loops
• Vector class: how like arrays?  how different?  contains references to Object instances;
• Vector and Iterator classes and methods:  addElement(), hasNext(), next()
• Overloading
• Overriding

Promises:

• No multiple choice questions
• Some short essay (a few sentences, no more)
• Matching questions (terminology to concepts and meaning)
• Given Java code, answer questions related to OO concepts
• Given Java code, what does it do? (getText(), setText(), type conversions)
• A question on using Vector and Iterator classes
• A question involving constructors, instantiation, signatures
• A question involving scope, special reference "this."
• watch over the weekend for more information!