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DataTypes Program
Questions based on DataType program done in class
| Term | Definition |
|---|---|
| Define main method. | a program begins by calling the main method and begins execution with the first line of code in the main method. |
| Define program block. | the code enclosed between { } |
| Define Naming rules. | alphanumeric no spaces special characters except _ $ MUST begin with letter |
| Define Naming conventions. | camelBack notation names are meaningful One-character variable names should be avoided |
| Define Declaration. | process of telling the compiler the name of a variable and type of data to be stored in the memory location allocated to the variable. |
| Define Data. | information formatted in a distinct way |
| Define DataType. | classification that determines how data is stored, possible values for data, and the operations that can be performed on the data. |
| Define Primitive DataTypes. | most basic data types provided by a language. |
| Define String. | class provided by Java that provides the ability to program with words |
| Define String literal. | character(s) enclosed with double quotation marks |
| Define Assignment. | the processes of storing a value at a variable's memory location using =(assignment operator) |
| Define Syntax. | grammar, structure, or order of the elements in a language statement. |
| How many bits can be in a variable? | 32 bits - 4 bytes |
| How many bits can be in a real variable? | 64 bits - 8 bytes |
| How many bits can be in a boolean? | 1 bit |
| How many bits can be in a character? | 16 bits - 2 bytes |
| What does JVM stand for? | Java Virtual Machine |
| Give an example of declaring a real variable named gpa. | double gpa; |
| Give an example of declaring a integer named age. | int age; |
| Give an example of declaring a boolean named hourly. | boolean hourly; |
| Give an example of declaring a character named initial | char initial; |
| Define Hard Coding. | |
| Define camelBack notation. | The first letter is lowercase and for each subsequent word the first letter is capitalized. |
| What are common names for temporary variable integers? | i, k, j m, and n |
| What does int data allow? | storage of integers, numbers fractional component (i.e no decimal point) |
| What does double data type allow? | The storage of rational and irrational (i.e numbers with decimal point) |
| What does boolean data type allow? | The storage of any keyboard character. |
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lil254a
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