Let's first look at the general meaning of "syntax" here...

The syntax (rules) for coding variables are pretty straightforward as shown below.

  • First declare the data type for the variable
  • Declare the variable name. This is "coder's choice" but should follow the naming guidelines from this chapter.

NOTES --
  • Java is picky (including case). E.g. Java considers these different variables: "firstName" and "FirstName".
  • You do not want a single quote ' or double quote " anywhere in the variable declaration. You may run into text like: The variable data type is "String" and name is "firstName". You would code it as firstName (without the quotes).
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String
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firstName;