Java seminar topic with demo

hello to all, i am the student of Msc(IT). i want seminar topic in java in which i can give demo..like mobile application..plz suggest me some good topics.....

games on mobile using j2me
JDBC
Threads in java
Socket programming in java
File IO in java
GUI in java and many more.

Hihi. I appreciate the smeeintnt, but I think you've misunderstood what I meant.I already know how to program in several languages, Java and PHP included, as well as Python, though I'm a bit rusty in that language. I'm not really sure how you got this idea that I was learning how to program, though.Anyway, I was just curious if I should write tutorials dealing with the basics of Java and/or J2ME programming, or if I should just jump right into writing the more advanced stuff..