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Data Types Program
Questions based on DataType program done in class
| Question | Answer |
|---|---|
| What is declaration? | Process of telling the compiler the name of a variable and the type of data to be stored in the memory location allocated to the variable. |
| What is Data? | Information formatted in a distinct way. |
| What is a Data Type? | Classification that determines how data is stored, possible values for data, and the operation that can be performed on the data. |
| What are Primitive Data Types? | The most basic data types provided by a language. |
| What is String? | Class provided by java that provides the ability to program with words. |
| What is String literal? | Character(s) enclosed in double quotation marks. |
| What is Assignment? | The processes of storing a value at a variable memory location using =(assignment operator) |
| What is Syntax? | Grammar, structure, or order of the elements in a language statement. |
| What is a main method? | A program begins by calling the main method and begins execution with the first line of code in the main method. |
| What is camelBack notation? | The first letter is lowercase and for each subsequent word the first letter is capitalized. |
| What is hard coding? | To use an explicit rather that a symbolic name for something that is likely to change at a later time. |
| The int data type allows what? | storage of integers (numbers fractional component i.e no decimal point)) |
| How many bits and bytes take to declare an integer variable? | (32 bits - 4 bytes) |
| How many bits and bytes take to declare a boolean? | (1 bit) |
| Common names for temporary variables are... | i, j, k, and n are for integers; c, d, and e for characters; x, y, and z for real numbers; |
| When should one character variables be used? | One - character variables should be avoided except for temporary "throwaway" variables. |
| What is a program block? | The code enclosed between {}. |
| How much bits and bytes take to declare a real variable? | (64 bits - 8 bytes) |
| Declaring a string size depends on what? | It depends on the Java Virtual Machine. |
| What allows the storage of multiple characters enclosed in double quotes? | JVM |
| What are the naming rules? | alphanumeric no spaces special characters except_$ MUST begin with letter |
| What is the Basic syntax for declaration and assignment? | <datatype> variableName= <value>; |
Created by:
b.billue
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