ETE Practice Set-1

                                                                Mock Test-1
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1 (a) Write a program that reads 10 integers between 1 and 100 and counts the occurrences of each. Assume the input ends with 0.                                                                                            [10 Marks]
                                                                            OR
(b) (i) Write a program to sum all the elements of an double type array containing 10 elements.                                                                                                                                                         [5 Marks]
     (ii) Write a program in which define a method to convert an array of double values into array of int values.Invoke that method from the main() method for displaying the output.             [5 Marks]


2 (a) Create a class Employee with properties name, salary, department and age. Create method read() in Employee class to read these properties from keyboard and display() method to display these properties. Create another class TestMyObject with main method to invoke read() and display() methods.                                                                                                                               [10 Marks]
                                                                           OR
(b) (i) Java is platform independent, Justify the statement and how the platform independence is achieved?                                                                                                                             [5 Marks]
    (ii) Write a program to demonstrate the use of any 5 methods of String class.              [5 Marks]

3 (a) What do you mean by Nested class in Java? Differentiate between the Inner class and Local class in java with an appropriate example.                                                                          [10 Marks]

                                                                            OR
(b)(i) Write a program to define two interfaces X and Y each having a default method and an abstract method. Now define a class Test which inherits both X and Y and override the abstract method of X but not of Y.
Create a class MyClass which inherits Test and in main method create the object of MyClass and invoke all the methods.                                                                                                       [5 Marks]

(ii) Define Functional Interface and Lambda Expressions in Java with a suitable example.  [5 Marks]


4 (a) Write a program to define a custom exception InvalidStringException such that it displays the message "String is not accepted" when message is printed. Create a class TestString which reads a String at run-time and if the String is having less than 6 characters then throw the InvalidStringException and display the message in catch block.                                     [10 Marks]

                                                                          OR
(b)(i) Differentiate throw and throws exception handling with java code in detail.         [5 Marks]                           
(ii)  Write a program to create a class named “Vehicle” having attributes name, mileage and price and a parameterized constructor to initialize all the attributes. Vehicle must contain a method public int getPrice() to return the price of the vehicle.
Create 3 Vehicle objects and write them in a file named “record.doc”. Write a method to display the name of the Vehicle with minimum price. (Use ObjectOutputStream)                            [5 Marks]


5 (a) Write a program to create two arraylists containing "George","Jim", "John", "Blake", "Kevin", "Michael" and "George","Katie", "Kevin", "Michelle", "Ryan" respectively and find their union, difference, and intersection using appropriate methods of ArrayList class.                    [10 Marks]
                 
                                                                       OR
  (b)(i) What do you mean by Generics? Write a program to create a generic class and instantiate it.                                                                                                                                             [5 Marks]
   (ii) Differentiate between the iterator and list iterator using an appropriate example.                                                                                                                                                             [5 Marks]


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