CSE143 – Miniquiz #2

01/14/2003

Name:

Section:

The following questions are based on the code fragment below defining a class Lake:

public class Lake implements BodyOfWater

{

private int depth;

public void fillWithWater(){

//implementation code//

}

public void drainWater(){

//implementation code//

}

}

Questions:

1) True or false? The code defining BodyOfWater could have the following form:

public class BodyOfWater

{

//some methods and variables//

}

FALSE

2) True or false? The variable depth could be defined in BodyOfWater exactly as it appears in class Lake.

FALSE

3) True or false? Methods in BodyOfWater can have a body (ie, implementation).

FALSE

4) True or false? An instance of Lake can be assigned to a variable of type BodyOfWater.

TRUE

5) Suppose that BodyOfWater defines 3 methods named fillWithWater, canSwimIn, isEmpty. True or false? The above code fragment defining class Lake is allowable.

FALSE