CS 102 • Midterm • Algorithms and Programming II

Variables -1

Variables -2

Conditional Statements -1

Conditional Statements -2

Loops -1

Loops -2

Methods -1

Methods -2

Java Class Design Basics: Building Your First Class Step by Step

Eclipse Demo: Build & Run Your First Account Class

Constructors to Console

Demo: Quick Run: Constructor Validation + Deposits in Console

Java Types: Defaults & Scanner

Quick Run: Types + Defaults + Scanner Trap

Example 1

Example 2

Control structures: sequence, selection, iteration

Selection: if, if-else, else-if

Iteration: while

Demo: Student Class (Selection + Validation + Driver)

Structured Programming recap

For Loop

For vs While

Expressions in For

Example: Sum of even numbers

Example: Compound interest

Do-While Loop

Infinite loop: why it happens

EOF + Scanner.hasNext()

Switch

break vs continue

Logical operators

Why Methods?

Math Class

Method Parameters & Return

Return Value

Nested Method Calls & Local Variables

Three Ways to Call a Method

Three Ways to Return

Static vs Instance Access

Dice Simulation (Frequencies)

Scope & Shadowing

Scope in Action & Method Overloading

Method Call Stack & Stack Overflow

Arrays Fundamentals: Creation, Indexing, and Core Patterns

Fill + Print (1..10)

Off-by-One Trap

Grades Stats (sum, average, max, passed)

Bar Chart (stars)

Frequency Arrays and Exception Handling

Arrays of Objects and Enhanced for

Passing Arrays to Methods

Introduction

Logic of Inheritance

Constructor Call

Overriding

Reference and Object

What is Polymorphism?

Casting

Static / Dynamic Binding

Why we need them?

Abstract Classes

Usage of Abstract Classes

Interfaces

UML

Constructors 1

Constructors 2

Constructors 3

Constructors 4

Inheritance 1

Inheritance 2

Inheritance 3

Inheritance 4

Inheritance 5

Inheritance 6

Polymorphism 1

Polymorphism 2

Abstract Classes and Interfaces 1

Abstract Classes and Interfaces 2

Abstract Classes and Interfaces 3

Abstract Classes and Interfaces 4

Abstract Classes and Interfaces 5