gistfile1

import javax.swing.JOptionPane;

/**
 * Takes in information about 2 people and displays it
 * @author Axelson, Jason
 * @assignment ICS 211 Assignment 11
 * @date Wed Oct  7 22:39:31 HST 2009
 * @bugs None known
 */
public class AxelsonJason11 {
  public static void main( String[] args ) {
    int age1 = -1, age2 = -1;
    String name1 = "", name2 = "";
    Person person1, person2;

    // Check if correct number of command-line arguments passed
    if ( args.length != 4 ) {
      JOptionPane.showMessageDialog( null, "Sorry, this program requries 4 arguments, in this order:\nname (of person 1), an age (in years), name (of person 2), and age ( of person 2 in years)" );
      System.exit( 1 );
    }

    // Parse command-line input
    // Format should be name (of person 1), an age (in years), name (of person 2), and age ( of person 2 in years)
    try {
      name1 = args[0];
      age1 = Integer.parseInt( args[1] );
      name2 = args[2];
      age2 = Integer.parseInt( args[3] );
    } catch ( NumberFormatException e ) {
      JOptionPane.showMessageDialog( null, "Sorry, you need to pass in age as an integer" );
      System.exit( 1 );
    }

    // Check for sanity of arguments
    if (( age1 < 0 ) || ( age2 < 0 ) ) {
      JOptionPane.showMessageDialog( null, "Sorry, ages need to be positive numbers" );
      System.exit( 1 );
    }

    // Create the Person objects
    person1 = new Person( name1, age1 );
    person2 = new Person( name2, age2 );

    // Display the information about the people
    JOptionPane.showMessageDialog( null, person2.toString() );
    JOptionPane.showMessageDialog( null, person1.toString() );
  }
}

/**
 * Models a person
 */
class Person {
  // Data fields
  String name;
  int age;

  // Constructor
  public Person( String name, int age ) {
    this.name = name;
    this.age = age;
  }

  // Returns information about the person as a string
  public String toString() {
    return this.name + " is " + this.age + " years old";
  }
}