ProfessorJ Beginner Language

• PROGRAM
  • IMPORT ... DEF ...
• IMPORT
  • import QUALIFIED_NAME ;
  • import QUALIFIED_NAME .*;
• DEF
  • CLASS-DEF
  • INTERFACE-DEF
• CLASS-DEF
  • class NAME { MEMBER MEMBER ... }
  • class NAME implements NAME { MEMBER MEMBER ... }
• INTERFACE-DEF
  • interface NAME { METHOD-DEC ... }
• MEMBER
  • CONSTRUCTOR
  • METHOD
  • FIELD
• CONSTRUCTOR
  • NAME (TYPE NAME, ...) { ASSIGNMENT ...}
• METHOD
  • TYPE NAME (TYPE NAME, ...) { STATEMENT }
• FIELD
  • TYPE NAME;
• METHOD-DEC
  • TYPE NAME (TYPE NAME, ...);
• ASSIGNMENT
  • this.NAME = EXPRESSION;
• STATEMENT
  • if (EXPRESSION) STATEMENT else STATEMENT
  • return EXPRESSION;
• EXPRESSION
  • EXPRESSION OP EXPRESSION
  • -EXPRESSION
  • EXPRESSION && EXPRESSION
  • EXPRESSION || EXPRESSION
  • !EXPRESSION
  • this
  • EXPRESSION.NAME( EXPRESSION ...)
  • EXPRESSION.NAME
  • new NAME( EXPRESSION ...)
  • (EXPRESSION)
  • NAME
  • NUMBER
  • CHARACTER
  • true
  • false
  • STRING
  • check EXPRESSION expect EXPRESSION
  • check EXPRESSION expect EXPRESSION within EXPRESSION
• QUALIFIED-NAME
  • NAME. ...NAME
• NAME
  • a sequence of keyboard characters not including certain characters and not forbidden to use as a name
• TYPE
  • prim-type
  • NAME
• OP
  • +, -, *, /
  • <, <=, ==, >, >=

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