Currently doing a past paper. Please can I have solutions to compare with. Thanks

Question 1

a) Explain the lifecycle of an applet [10]

b) Inthe following program , explain why the value 6" is printed twice in a row:

classPrePostDemo {

publicstaticvoidmain(String[ ]args){

inti = 3;

i++;

System.out.println(i); //"4"

++i;

System.out.println(i); //"5"

System.out.println(++i); //"6"

System.out.println(i++); //"6"

System.out.println(i); //"7"

}

} [5]

c) Explain the implications of using the following access modifiers:

i) Private [5]

ii) Protected [3] and

iii) Public [3]

Question 2

a) Debug the following interface

PublicinterfaceSomethingIsWrong { voidaMethod(intaValue) {

System.out.println("HiMom");

}

}

b) Explain the following ObjectOriented Programming terms

i) Polymorphism;

ii) Encapsulation; and

iii) Object Overloading.

p

c) Write a program that computes your initials from your full name and displays them. [10]

Question 3

a) Describe the parts that make up OOP [10]

b) Recall the Pythagorean Theorem says that if a; b are the lengths of two

edges of a right triangle, then the length of the hypotenuse c is given by

c2 = a2 + b2:

Write a Java application which prompts the user to enter the lengths of two edges of a right triangle and then computes the length of the hypotenuse. [15]