- char: primitive type for a single character, e.g.
'a'
- String: complex type for text; a sequence of chars
- Concatenate: join strings/chars end-to-end with
+
- A driver can create + use objects from several classes
- Main method: The method that is called when you run the program ("entry point")
- "public" method can be called from other classes/files
- "static" method is part of the class, not instances of the class
- "void" method has no return value
- "String[]" an array of strings containing command line arguments