Problem 3
Write a program to display all the system properties.
Problem 9
Write short notes on String/Tokenizer and Properties class.
Problem 13
Which class is the root class for all the Java class? Justify.
Problem 15
. Explain the terms Observable class and Observable interface with suitable example.
Problem 17
Why do we use clone method in Java? Explain with example.
Problem 19
Write short note on Wrapper class with example.
