Java Reference
In-Depth Information
CHAPTER
2
ELEMENTARY
P ROGRAMMING
Objectives
To write Java programs to perform simple computations (§2.2).
To obtain input from the console using the Scanner class (§2.3).
To use identifiers to name variables, constants, methods, and classes (§2.4).
To use variables to store data (§§2.5-2.6).
To program with assignment statements and assignment expressions
(§2.6).
To use constants to store permanent data (§2.7).
To name classes, methods, variables, and constants by following their
naming conventions (§2.8).
To explore Java numeric primitive data types: byte , short , int ,
long , float , and double (§2.9.1).
To read a byte , short , int , long , float , or double value from the
keyboard (§2.9.2).
To perform operations using operators + , - , * , / , and % (§2.9.3).
To perform exponent operations using Math.pow(a, b) (§2.9.4).
To write integer literals, floating-point literals, and literals in scientific
notation (§2.10).
To write and evaluate numeric expressions (§2.11).
To obtain the current system time using
System.currentTimeMillis()  (§2.12).
To use augmented assignment operators (§2.13).
To distinguish between postincrement and preincrement and between
postdecrement and predecrement (§2.14).
To cast the value of one type to another type (§2.15).
To describe the software development process and apply it to develop
the loan payment program (§2.16).
To write a program that converts a large amount of money into smaller
units (§2.17).
To avoid common errors and pitfalls in elementary programming (§2.18).
 
 
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