Practical Assignment - 1

Smt. R.O.Patel Women’s MCA College, Morbi

MCA 2012-13

Subject Name: Programming Skills – IV (Java) - 630006                 

MCA Semester: 3                                                Submission Date: 21/July/2012

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Lab Manual 1

1. Write a Java program which demonstrates “Hello world”.
2. Write a Java program which generate below given output.
   *****
   ****
   ***
   **
   *
   *
   **
   ***
   ****
                             *****
3. Write a Java program to create and print Fibonacci series. (Fibonacci Series upto 20 element)
4. Observe the interactions involved in the process of booking a railway ticket. Identify the various objects involved and the interactions between the objects in order to solve a problem of booking a railway ticket.
5. Write a simple java application to print a pyramid with 5 lines. The first line has one character, 2nd line has two characters and so on. The character to be used in the pyramid is taken as a command line argument.
6. Write a Java application which takes several command line arguments, which are supposed to be names of students and prints output as given below:
   (Suppose we enter 3 names then output should be as follows)...
   Number of arguments = 3
   1.: First Student Name is = Tom
   2.: Second Student Name is = Dick
   3.: Third Student Name is = Harry
   
   
   Hint: An array may be used for converting from numeric values from 1 to 20 into String.   
7. Write a class, with main method, which declares floating point variables and observe the output of dividing the floating point values by a 0, also observe the effect of assigning a high integer value (8 digits and above) to a float and casting it back to int and printing. 
8. Write a class called Statistics, which has a static method called average, which takes a one-dimensional array for double type, as parameter, and prints the average for the values in the array. Now write a class with the main method, which creates a two-dimensional array for the four weeks of a month, containing minimum temperatures for the days of the week(an array of 4 by 7), and uses the average method of the Statistics class to compute and print the average temperatures for the four weeks.
9. Define a class called Product; each product has a name, a product code and manufacturer name. Define variables, methods and constructors, for the Product class. Write a class called TestProduct, with the main method to test the methods and constructors of the Product class.
10. Define a class called CartesianPoint, which has two instance variables, x and y. Provide the methods getX() and getY() to return the values of the x and y values respectively, a method called move() which would take two integers as parameters and change the values of x and y respectively, a method called display() which would display the current values of x and y. Now overload the method move() to work with single parameter, which would set both x and y to the same values. Provide constructors with two parameters and overload to work with one parameter as well. Now define a class called TestCartesianPoint, with the main method to test the various methods in the CartesianPoint class.