Answer the Questions(Multiple Choice):

Question 11

What are the values of i and sum after this code sequence is executed?

int i = 0; int sum = 0; for ( i = 0; i < = 40; i++) {

if ( i % 10 = = 0)

sum += i ;

}

	a.	i is 40 sum is 60
	b.	i is 41 sum is 60
	c.	i is 40 sum is 100
	d.	i is 41 sum is 100

2.5 points

Question 12

What is the output of the following code sequence:

double a = 16 / 5; System.out.println( a );

	a.	2.6
	b.	3.2
	c.	a
	d.	3.0

2.5 points

Question 13

Given code:

public abstract class A{ } public class B extends A { }

The following code sequence would correctly create an object reference of class A holding an object reference for an object of class B:

A c; c = new B();

True

False

2.5 points

Question 14

Given the following code declaring and initializing two int variables x and y with respective values 7 and 9, answer question 14 indicating whether the value of the expression is true or false.

int x = 7; int y = 9;

Expression: ( y x == 0 || ( x + 2 ) != y)

True

False

2.5 points

Question 15

Class SimpleDate encapsulates integer instance variables month, day and year. Consider the following equals method in class SimpleDate:

public boolean equals( Object o ) { if ( !( d instanceof SimpleDate ) )

return false;

( Insert appropriate code from selections below)

if ( month == d1.month

&& day == d1.day && year == d1.year )

return true;

else

return false;

}

Which statement(s) could be used to complete the above method body code correctly?

	a.	SimpleDate d1; d1 = (SimpleDate)o;
	b.	SimpleDate d1 = o;
	c.	SimpleDate d1 = (SimpleDate)o;
	d.	Both a and c