What are the Java variable naming constraints?
Java variable names must start with one of the following characters:
- Letter
- Underscore
- Dollar sign
After the first character, Java variable names can contain numbers.
Java Variable Naming Reserved Words
Java variable names cannot be one of the Java reserved words:
- assert
- boolean
- break
- byte
- case
- catch
- char
- class
- const
- continue
- default
- do
- double
- else
- extends
- false
- final
- finally
- float
- for
- goto
- if
- implements
- import
- instanceof
- int
- interface
- long
- native
- new
- null
- package
- private
- protected
- public
- return
- short
- static
- strictfp
- super
- switch
- synchronized
- this
- throw
- throws
- transient
- true
- try
- void
- volatile
- while
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