Java Expressions and Assignments

// This is the main class/method for the interpreter. // Each command-line argument is a complete program, // which is scanned, parsed, and evaluated. // All evaluations share the same environment, // so they can share variables. public class Interpreter { public static void main(String[] args) { Parser parser=new Parser(); Environment env=new Environment(); for (String stmt: args) try { System.out.println(parser.parse(stmt).eval(env)); } catch (SyntaxException e) { System.err.println(e); } catch (EvalException e) { System.err.println(e); } } }