Java Program

A.

CLASSES & OBJECTS

1.Write a program in java with class Rectangle with the data fields width ,length ,area and colour .The length ,width and area of double type and colour is of string type .The method are set_length(),set_width(),set_color() and find area ().Create two object of rectangle and compare their area and colour .If area and colour both are same for the objects then display “matching Rectangle” , other wise display “non matching rectangle”. 2.Create a class account with two overloaded constructers .The first constructer is used for initializing , the name of account holder ,the account number and the initial amount in the account .The second constructer is used for initializing the name of account holder , the account number , the address , the type of account , and the current balance .The account class is having method s deposit(), withdraw() and getbalance().make the necessary assumption for data members an return types of methods create objects of account class and use them. 3. W A P in java to reverse the given string using stack.

B.INHERITANCE

& POLIMORPHISM

1. WAP in java to show that private member of a super class can not be accessed from derived class 2. WAP in java to create a player class . Inherit the class Cricket_Player ,Football_Player and Hocky_player classes. 3. WAP in java to create a class worker and derived classes daily worker and salaried worker from it.Every worker has a name and a salary rate. Write method compay (int hours) to compute the week pay of every worker .A daily worker is paid on the basis of the number of days he/she works . The salaried worker gets paid the vage for 40 hours a week no matter what the actual hours are.Test this program to calculate the pay of workers . You are

expected to use the concept of polymorphism to write this program. 4. Consider the trunk call of a telephone exchange .A trunk call can be ordinary , urgent or lighting . The charges depend on the duration and the type of call .Write a program using the concept of polymorphism in JAVA to calculate the charges .

C.PACKAGE & INTERFACE