82: Highlights

• A variable is an identifier that names a chunk of memory.
• The integral data types are char, byte, short, int, and long.
• The floating-point data types are float and double.
• Integral, floating-point, and boolean data types are said to be primitive data types.
• If you wish to write a one-line comment, then introduce that comment with //.
• If you wish to write a multiline comment, then delimit that comment /* ... */.
• If you wish to introduce a variable, then you must declare the data type of that variable in a variable declaration:

  data type variable name; 
  

• If you wish to provide an initial assignment for a variable, then you can include that initial assignment in the declaration statement:

  data type variable name = initial-value expression; 
  

• If you wish to assign a variable after that variable is declared, then use an assignment statement:

  variable name = new-value expression;