Create a class Student
add two variables: studentName and studentCode
add two constructors method for object creation:
		first with no arguments
		second recieves name and code and assign values to 
		corresponding variables

Create a Test class. Test class contains main method. 
Create Objects of Stundent class:
	first without arguments (no name and no code)
	second with student name and code.
	
Add a method, which return 0 if a student name contains 'a'
use java api specification for java.lang.String 
and method contains(CharSequence s)

Call this method from Test class.


I add here one other example from www.tutorialspoint.com for better
understanding of method contains:


		public class StringDemo {

   public static void main(String[] args) {

      String str1 = "tutorials point", str2 = "http://";
   
      CharSequence cs1 = "int";
    
      // string contains the specified sequence of char values
      boolean retval = str1.contains(cs1);
      System.out.println("Method returns : " + retval);
    
      // string does not contain the specified sequence of char value
      retval = str2.contains("_");   
      System.out.println("Methods returns: " + retval);
   }
}



Write an instance method contains that will be placed 
inside the Rectangle class. 
The method accepts integers for x and y as parameters 
and turns true if that x/y coordinate lies within this rectangle. 
The edges are included; for example, a rectangle with x=2, y=5, 
width=8, height=10 will return true for any point from (2, 5) 
through (10, 15) inclusive.