CS 121 Lecture Notes - Lecture 9: Increment And Decrement Operators, Concatenation, Extended Ascii
28 Feb 2017
School
Department
Course
Professor
Document Summary
Chapter 2 cont"d: primitive data types & expressions. There are 8 primitive data types in java; 4 of them represent integers: byte, short, int, long. 2 of them represent floating point numbers: float, double. +/- 3. 4 x 1038 w/ 7 significant digits. +/- 1. 7 x 10308 w/ 15 significant digits. & 1 of them represents boolean values: boolean. Character literals are delisted by single quotes: Ex: char bloodtype = a"; char terminator = ; , separator = ; The difference between a char variable & a string object is that a char variable can only hold one character & a string can hold multiple characters. The characters we can manage are defined by a character set - the ascii character set (american standard code for information interchange) Extended ascii uses 8 bits per character, to satisfy increasing demand of a more flexible character set. # of characters in extended ascii is 28.
