// @(#)$Id: Person.java 1199 2009-02-17 19:42:32Z smshaner $

// Copyright (C) 2003 Iowa State University

// This file is part of JML

// JML is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.

// JML is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with JML; see the file COPYING.  If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.


package org.jmlspecs.samples.jmltutorial;

public class Person {
  private String name;
  private int weight;

  /*@ also
    @ ensures \result != null
    @   && (* \result is a displayable
    @       form of this person *);
    @*/
  public String toString() {
    return "Person(\"" + name + "\","
      + weight + ")";
  }



  public int getWeight() {
    return weight;
  }



  public void addKgs(int kgs) {
    if (kgs >= 0) {
      weight += kgs;
    } else {
      throw new IllegalArgumentException();
    }
  }



  public Person(String n) {
    name = n; weight = 0;
  }
}