Intro to computer programming final exam review

What happens when a program is compiled

It is checked for errors

What character ends a Java command

;

Strings are made up of what characters

All

What does the compiler do with comments? What is the purpose of comments

Completely ignores comments to give information to others

What are the rules for legal Java variable names

No spaces, can’t start with a number

What keyword is used to make a variable constant

Final

Difference between integer and double division

Integer will give and integer answer, double will give a double answer

3 ways to add or subtract one from a variable

++ a=+1

What is casting used for, double to int and int to double

Widening and narrowing

Difference between object and class

Class is like recipe and object is like the dish

What are escape characters

\n

\”

\\

\t

How is + used (2)

++ (“”+int)

Methods of string class

Substring(a)

Substring(a,b)

Length()

To upper/lower case

Method of math class

Sqrt

Pow

Random

Primitive data type

Boolean, int, double

Variable assigned as null

=null

If statements

If true continue

If else statements

If false, this runs

If if else if statements

Final if everything is false

Nested if statements

And/or logic statements

&& || !

Truth tables

A||B A&&B

While loops and for loops

While(a>2){

For(int a= 1;a>2;a++