Week 9 (Object Serialization - saving Data Structures to file.)

1. Check that you can create a mysql database on igor read this.
2. Take a copy of mysql-connector-java-5.1.7-bin.jar nd add it to your CLASSPATH. This is what you need to connect to a mysql database server in Java.

1. Watch video about Object Serialization 6

2. Read http://java.sun.com/j2se/1.4.2/docs/api/java/io/ObjectOutputStream.html.

3. Adapt week5/WordSort.java so it saves the map to a file. Solution

4. Read http://java.sun.com/j2se/1.4.2/docs/api/java/io/ObjectInputStream.html.

5. Adapt week6/solutions/WordSortMapToFile.java so it reads the map from the file and prints it out. Solution

6. (Easy Assignment) Adapt week1/solutions/one.java so it saves the list in a file. Write another program like week6/solutions/readMapFromFile.java which reads the list from file and prints it out.

7. (Hard Assignment) Adapt week4/solutions/sameSite2.java so it produces a

   TreeMap  <String, HashSet<String>> linksTo
   

   Which for every URL visited it gives us the set of links in the corresponding page. Save the TreeMap linksTo in a file.

   Write another program which prints the contents of the TreeMap stored in the file.