Chapter 1 Object-Oriented Programming Using Java
Chapter 1 Object-Oriented Programming
Using Java
Data Structures and Algorithms in Java
Objectives
Discuss the following topics: ? Rudimentary Java ? Object-Oriented Programming (OOP) in Java ? Input and Output ? Java and Pointers ? Vectors in java.util
? Data Structures and Object-Oriented Programming
? Case Study: Random Access File
Data Structures and Algorithms in Java
2
Rudimentary Java
? A Java program is a sequence of statements that have to be formed in accordance with the predefined syntax
? A statement is the smallest executable unit in Java
? Each statement ends with a semicolon ? Compound statements, or blocks, are marked
by delimiting them with braces, { and }
Data Structures and Algorithms in Java
3
Variable Declarations
? Each variable must be declared before it can be used in a program
? It is declared by specifying its type and its name ? Variable names are strings of any length of
letters, digits, underscores, and dollar signs that begin with a letter, underscore, or dollar sign ? A letter is any Unicode letter ? Java is case sensitive
Data Structures and Algorithms in Java
4
Variable Declarations (continued)
? A type of variable is either:
? One of the eight built-in basic types ? A built-in or user-defined class type ? An array
Data Structures and Algorithms in Java
5
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