Question | Answer |
Declare an integer variable labeled x | int x; |
Declare an integer variable labeled y | int y; |
Declare a real number labeled real | double real; |
Declare a boolean labeled boo | boolean boo; |
What is a declaration? | Process of telling the compiler the name of a variable and the type of data to be stored in the |
what is data? | Information formatted in a distinct way |
What is a data type? | determine how data is stored, possible values for data. |
What is Primitive datatypes? | The most basic datea types provides the ability to program words. |
What is a String? | Class provided by java that provides the ability to program words. |
What is a String Literal? | Character(s) enclosed in double quotation marks. |
define assignment | Process of storing a value at a variable's memory location assignment operator |
What is syntax? | The usage of punctuation within the code to allow the compiler to understand it. |
what is program block? | the code enclosed between () |
What does int data allow? | allows the storing of integers (positive and negative whole numbers) |
How much bits/bytes does a int variable take? | 32bit- 4 bytes |
How much bits/bytes does a real variable take? | 64bits- 8 bytes |
How many bits does a boolean take? | 1 bit |
the double data allows? | it allows you to input decimal numbers |
The boolean data allows? | Allows you to store a true or false statement |
What does a boolean data type require? | requires single quotations marks |
Common names for temp variables | i, j, k, and n are foe int
c, d, and e for characters |
What are the rules for naming camelBack notation? | First letter is lowercase and each subsequent word, the first letter is capitalized. |
What characters should be avoided? | One- character variables should be avoided except for temporary "throwaway" variables. |
Define Naming rules | alphanumeric
no spaces
special characters except _ $
MUST begin with letter |
Define Naming conventions | camelback notations
names are meaningful
One-characer variable names should be avoided |
Define declaration | Telling the compiler what kind of variables you want to use and store. |
How to declare a real variable? | double <variable>; |
How to declare a String? | String <variable>; |
How to declare a character? | char <variable>; |
What is the basic syntax for assignment? | variableName=<variable>; |
What is main method? | The beginning of a program |
How do you start a single line comment? | // |
How do you start and end a multi-line comment? | /*-start
*/-end |
What must match the class name? | The file name. |