November 2019
Beginner
228 pages
2h 45m
English
In this chapter we will summarize what we have learned so far in the Java basics area and point out some common mistakes.
General Rules
How to Define a Variable Name
Variable name string
case-sensitive
okay to include numbers 0 to 9
okay to have underscore _ or dollar sign $
Variable name string:
cannot start with number
cannot use reserved words, such as for, class, void, if, else, etc.
How to Output in Console
System.out.print(<string + value>);
System.out.println(<string + value>);
How to Listen to Input in Console
Scanner input = new Scanner(System.in);
input.nextLine();
input.next();
input.nextInt();
input.nextFloat(); ...
