CS639 Midterm Exam, Mar. 28, 2006, edited for practice midterm, S12 NAME:_________________________

Open books, notes, handouts, solutions, etc.

Show all work on these pages, using backs of pages if needed. Total points = 100, equally divided among numbered problems.

1. Consider expressing Javadoc information for a Java method in XML. Here is an example of such Javadoc (followed by its method):

/**

* Runs a test of adding boxes to bins

* @param sizes sizes of the boxes

* @param collection The BinCollection to store the boxes

* @return The number of bins

*/

public static int runTest( int[] sizes, BinCollection collection )

Assuming a standard Javadoc format of optional general description, then any parameters, followed by any return (and finally any throws, but let’s ignore this complication), design an XML element named “MethodJavaDoc”. Separately treat “sizes” and “The sizes of the boxes” for the first parameter here (have them in different text nodes in the XPath sense.) Show how the content of this example Javadoc would be written in XML in your design. Don’t use any attributes.

2. Provide a DTD for your XML of 1.

3. Provide an XML Schema for your XML, in steps:

a. Provide a type definition for your parameter-related element’s type, starting like this:

<xsd:complexType name="DocParamType">

b. Based on this type, provide a schema for the whole MethodJavaDoc element. You don’t have to recopy (a)’s text—we’ll assume it’s added at the end.

Here’s a start:

<?xml version=”1.0”>

<xsd:schema xmlns:xsd=”http://www.w3.org/2001/XMLSchema”>

<xsd:element name=”MethodJavaDoc”>

4. Web technology

Recall this line of HTML from hw1’s solution:

<a href='http://www.google.com/search?q=java+XML+news'>Latest Java XML News</a>

a. If this HTML is displayed in a browser, and the user clicks on this link, what happens?

Browser connects to host ________ , port _______

HTTP command:

Returns XML, HTML or what?

b. Suppose we wanted to disguise our use of Google by hiding the request to Google inside a program. Rewrite the try { } of Example 2.3 to accomplish this, so that “java URLGrabberTest” will cause the same output to be displayed.

5. [On actual exam, this problem would be useful for raising your pa1b’s score if needed] Consider the solution for pa1b, working on this little Box class:

public class Box {

private int height;

private static int count = 0;

public Box(int height) { this.height = height; count++;}

public int getHeight() {return height;}

private void setHeight(int height) {this.height = height;}

public static int getCount() { return count; }

public static class BoxPart {

public int h;

public int getHeight() { return h; }

}

}

1. What Method objects end up in nonStaticMeth during the top-level call (processing Box) to classToXML? Underline the corresponding method names above.

2. How is the Method class provided to this program at compile time? at run time? What package is it in?

c. What XML is produced during the recursive call (processing BoxPart) to classToXML?

6. Consider pa2’s solution… [On actual exam, this problem would be useful for raising your pa2’s score if needed]