Java An Introduction to Problem Solving and Programming Chapter 1.3 (Notes)

Object-Oriented Programming

• Object-Oriented Programming is Java, also known as OOP.
• Software objects act and interact.
• The values of an object's attributes define its state.
• A class is a blueprint for objects.
• OOP design principles:
- Encapsulation
- Polymorphism
- Inheritance

Encapsulation

• Encapsulation packages and hides details.

Polymorphism

• Polymorphism enables objects to behave appropriately.

Inheritance

• Inheritance organizes related classes.

Algorithms

• An algorithm is like a recipe.
• Algorithms are often written in pseudocode.

Pseudocode

• Pseudocode is a mixture of English and Java.

Testing and Debugging

• Syntax errors are grammatical mistakes.
• Run-time errors occur during execution.
• Logic errors are conceptual mistakes in the program or algorithm.
Example: using multiply instead of add.

Software Reuse

• Java provides a library of classes for you.