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Java Programming Questions and Answers

Software Programming : Java Programming QUESTIONS AND ANSWERS :: part18 : 6 to 10

Following Software Programming language Entrance Multiple choice objective type questions and answers will help you in Software Programming 2024 examinations :

6.Given the code below: class A { public void print() { System.out.println("hi"); } } class B extends A { public void print() { System.out.println("bye"); } } What does each of the following code samples do: A a = new B(); a.print();

Prints nothing

Prints “hi”

Prints “bye”

The code does not compile, the compiler returns a type error

The code throws a runtime exception.

7.What is the output of the following code? class Arithmetic { public static void main (string args[]) { int x=17, y=5; System.out.println(“x =” +x); System.out.println(“y =” +y); System.out.println(“x+y=” +(x+y)); System.out.println(“x-y=” +(x-y)); System.out.println(“x*y=” +(x*y)); System.out.println(“x/y=” +(x/y)); System.out.println(“x%y=” +(x%y)); } }

5, 17, 12, 85, 3, 2

17, 5, 22, 12, 85, 3, 2

17, 5, 20, 21, 85, 3, 2

2, 3, 85, 12, 22, 5, 17

17, 5, 12, 22, 85, 2, 3.

8.Suppose we now wish to print the balance information for an account with the following code: Account myAccount = new OverdraftAccount(5, 10); myAccount.printBalance(); Which of the following statement is true?

The printed output is the string “Account”

The printed output is the string “OverdraftAccount”

The printed output is the string “Account: $5”

The printed output is the string “OverdraftAccount: $5”

There will be a compilation error because OverdraftAccount, the run-time type of myAccount, does not define the printBalance() method.

9.class Relational{ public static void main (string args[]) { int x=7, y=11, z=11; System.out.println(“y<=z =” +(y<=z)); } }

y<=z = 0

y<=z = 1

y<=z = true

y<=z = false