Programming with Java — Winter 2019

Fill in the blanks : 1. ___________ is the base class of all classes in java. 2. ___________ package is a default package in java. 3. __________ is known as father of java. 4. _________ block if present, is always executed irrespective of the Occurrence of exception. 5. To declare a variable as constant ________ keyword is useful. 6. In comapreTo() we have to pass ______ number of arguments. 7. When we declare class with final we can't ________ it.

Define Thread. How different way thread is created in Java? Discuss the Thread life cycle with suitable example of java program code.

What is collection framework? Discuss generics in collection framework with suitable example.

Give differences between Comparable and Comparator interface. Also give example.

Distinguish between:

abstract class v/s interface

String v/s StringBuffer

Explain Character Stream and Byte Stream with suitable example.

Write a program to copy content of one file in another file. Pass both file names as command line argument.

Discuss BufferedWriter and the BufferedReader class of java I/Owith example.

Write a program to generate 10 random nos. and find its average and nos. more than avg.

What is inheritance? Explain types of inheritance. Also explain how can “interface” concept eliminate code duplicity problem in java which is generated due to multiple inheritance?

Explain various features of java in detail.

Explain the use of abstract and final with reference to variable, method and class with example

Explain exception handling mechanism in java using try, catch, throw, throws and finally with suitable example

Define package. State the steps to create and import a package. Also explain how to set classpath in detail

Define custom exception. Differentiate between checked and unchecked exception (Reported and Unreported exception).

Explain RandomAccessFile with suitable example

Explain Date class and Calendar class with suitable example