Pre-Quiz3 - Fall 2006

Q1. Who's your grading TA? (Please circle your answer)

Dawn 	 Joel 	  Mark 	   Brian    REMOVEDng-Yen 	  Richard

Q2. Here're the Student.java class and the Person.java class:

public class Student extends Person {
  
  private String school;
  private int schoolID;
  
  public Student(String someName){
    super(someName); // Must be the first line
    this.defaultSchool();
  }
  
  public Student(String someName, int someID){
    super(someName);
    this.defaultSchool();
    this.schoolID = someID;
  }
  
  public String getSchool(){
    return this.school;
  }
  
  public void setSchool(String someSchool,int someID){
    this.school = someSchool;
    this.schoolID = someID;
  }
  
  public void defaultSchool(){
    this.school = "Georgia Tech";
  }
  
  public String toString(){
    return super.toString()+". And I'm a student at "
      +this.getSchool()+" and my school ID is "+this.schoolID;
  }
  
  public void greet(){
    super.greet();
    System.out.println("Go away -- I'm late for class! I'm a student at " +this.getSchool());
  }
}

public class Person {
  		private String name;
  
  		public Person(){
    			this.setName("Not-yet-named");}

  		public Person(String name){
    			this.setName(name);}
  
  		public String toString(){
    			return "Person named "+this.name;}

  		public void setName(String somename)
  			{this.name = somename;}
  
  		public String getName()
  			{return this.name;}

		public void greet(){
                       System.out.println("Howdy! My name is " +this.name);}
}

public class Prequiz3 {
  	public static void main(String[] args){
    	//Create two instances of Student Object 
   	 Person mike = new Student("Mike");
    	 Student fred = new Student("Fred");
   
         ((Student)mike).setSchool("Georgia Tech",10);
         fred.setSchool("UGA",11);
    	 System.out.println("Fred is " + fred);

    	 mike.greet();
	}
}

Q3. Consider the follwing SoundTreeExample class:

public class SoundTreeExample {

  ScaleBranch scaledBranch; // Needed between methods
  
  SoundBranch root;
  
    public void setUp() {

      FileChooser.setMediaPath("D:/cs1316/MediaSources/");
      Sound clap = new Sound(FileChooser.getMediaPath("clap-q.wav"));
      Sound chirp = new Sound(FileChooser.getMediaPath("chirp-2.wav"));
      Sound rest = new Sound(FileChooser.getMediaPath("rest-1.wav"));
      Sound snap = new Sound(FileChooser.getMediaPath("snap-tenth.wav"));
      Sound clink = new Sound(FileChooser.getMediaPath("clink-tenth.wav"));
      Sound clave = new Sound(FileChooser.getMediaPath("clave-twentieth.wav"));
      Sound gong = new Sound(FileChooser.getMediaPath("gongb-2.wav"));
      Sound guzdial = new Sound(FileChooser.getMediaPath("guzdial.wav"));
      Sound is = new Sound(FileChooser.getMediaPath("is.wav"));

      root = new SoundBranch();
      SoundNode sn;

      SoundBranch branch1 = new SoundBranch();
      sn = new SoundNode(guzdial);
      branch1.addChild(sn);
      sn = new SoundNode(clink.append(snap));
      branch1.addChild(sn);
      root.addChild(branch1);

      scaledBranch = new ScaleBranch(2.0);
      sn = new SoundNode(clink);
      scaledBranch.addChild(sn);
      sn = new SoundNode(rest.append(chirp));
      scaledBranch.addChild(sn);
      root.addChild(scaledBranch);

      SoundBranch branch2 = new SoundBranch();
      sn = new SoundNode(clap);
      branch2.addChild(sn);
      sn = new SoundNode(snap.append(clave));
      branch2.addChild(sn);
      root.addChild(branch2);

      root.playFromMeOn();
  }
//Ignore the rest.
}

> SoundTreeExample ste = new SoundTreeExample();
> ste.setUp();

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• Pre-Quizzes-Fall 2006 last edited on 27 December 2006 at 5:08 pm by 24-241-99-170.static.stls.mo.charter.com