interface ICommand {
  void execute(int x);
}

class Client {
  ICommand c;
  
  void setCommand(ICommand c) {
    this.c = c;  
  }
  
  void run(int i){
    // Math.random() returns a double between >=0.0 and < 1.0
    int j = (int) (10.0*Math.random()); 
    if(i > j) {
      System.out.println(i+" > "+j);
      c.execute(j);
    }
    else {
      System.out.println(i+" < "+j);
    }
  }
}
 

class Command1 implements ICommand {
  public void execute(int x) {
    System.out.println("Yahoo! " + x);
  }
}

class Command2 implements ICommand {
  public void execute(int x) {
    System.out.println("Mamma mia!" + x);
  }
}

class CommandFrame extends javax.swing.JFrame implements ICommand {
  public void execute(int x) {
    int y = 100*x;  // will need this value many times
    setTitle("The frame is "+y+" x "+y+" pixels");  // sets the title of the frame
    setSize(y,y); // sets the size of the square frame 
    show();  // show the frame if not visible
  }  
}

class PhraseMaker {
  void phrase1() {

    System.out.println("Java:  More fun under the Sun.");
  }
  
  void phrase2() {
    System.out.println("C#: Bill G's vision when he gets old?");
  }
}

class Command3 implements ICommand {
  ICommand c1, c2;
  
  Command3(ICommand c1, ICommand c2) {
    this.c1 = c1;
    this.c2 = c2;
  }
  
  public void execute(int x) {
    c1.execute(x);
    c2.execute(x);
  }
}

class Command4 implements ICommand {
  PhraseMaker p;
  Command4(PhraseMaker p) {
    this.p = p;
  }
  
  public void execute(int x) {
    p.phrase1();
  }
}

class Command5 implements ICommand {
  PhraseMaker p;
  Command5(PhraseMaker p) {
    this.p = p;
  }
  
  public void execute(int x) {
    p.phrase2();
  }
}