// Demo.java
import java.awt.event.*;

/**
 * Beispielklasse für Tcl/Java-Integration
 */
public class Demo {
  public static final String NAME = "Demo";
  private String a;
  private Demo b;
  private int c;

  public Demo (String a) {
    this.a = a;
  }
  public Demo (String a, Demo b) {
    this.a = a;
    this.b = b;
  }
  public static Demo getInstance (String a0) {
    return new Demo(a0);
  }

  public void   setA (String a) {this.a = a;}
  public String getA ()         {return a;}
  public Demo   getB ()         {return b;}
  public void   setC (int c)    {this.c = c;}
  public int    getC ()         {return c;}

  public String fehler (long a) {
    if (a>0) {
      if ( (a%3) == 0 ) {
        throw new IllegalArgumentException ("teilbar durch 3");
      } else if ( (a%2) == 0 ) {
        throw new IllegalStateException ("teilbar durch 2");
      }
    }
    return String.valueOf (1/a);
  }

  public long methode() {
    return System.currentTimeMillis();
  }
  public String toString() {
    return (b == null) ? a : (b.toString( ) + a);
  }

  public String überladen (int a)    {return String.valueOf(a/2); }
  public String überladen (double a) {return String.valueOf( a ); }
}