Question

Q10: Which of the following is not an error (either a syntax error or a logic error)?

1. Neglecting to include an action in the body of a while statement that will eventually cause the condition to become false.
2. Spelling a key word (such as while or if) with a capitalized first letter.
3. Using a condition for a while statement that is initially false.
4. An infinite loop.

Q11: How many times is the body of the loop below executed?

int counter;

counter = 1;

while ( counter < 20 )

{

   // body of loop

   counter = counter + 2;

} // end while

19	20
10	11

Q12: Which statement is true?

1. Dividing two integers results in integer division.
2. With integer division, any fractional part of the calculation is lost.
3. With integer division, any fractional part of the calculation is truncated.
4. All of the above.

Q13: In an expression containing values of the types int and double, the ________ values are ________ to ________ values for use in the expression.

1. int, promoted, double.
2. int, demoted, double.
3. double, promoted, int.
4. double, demoted, int.

Q14: Local variables must be ________.

1. initialized when they are declared.
2. initialized before their values are used in an expression.
3. declared and initialized in two steps.
4. declared at the top of the metho

Q15: Which statement is true?

1. A while statement cannot be nested inside another while statement.
2. An if statement cannot be nested inside another if statement.
3. A while statement cannot be nested inside an if statement.
4. None of the above is true.

Q16: Which of the following code segments does not increment val by 3:

1. val += 3:
2. val = val+1;
   val = val+1;
   val = val+1;
3. c = 3;
   val = val + (c == 3 ? 2 : 3);

d.    All of the above increment val by 3.

Q17: What does the expression x %= 10 do?

1. Adds 10 to the value of x, and stores the result in x.
2. Divides x by 10 and stores the remainder in x.
3. Divides x by 10 and stores the integer result in x.
4. None of the above.

Q18: What is the result value of c at the end of the following code segment?

int c = 8;

c++;

++c;

c %= 5;

0	1
3	None of the

Q19: Which of the following is not a primitive type?

a. char            b. float

c. String          d. int

Q20: Which primitive type can hold the largest value?

a. int          b. long

c.    float       d. double

Q21: What is the size in bits of an int?

8	16
32	64

Q22: In Java graphics, coordinate units are measured in ________.

dots.	pixels.
points.	inches.

Q23: Keyword ________ indicates the inheritance relationship.

extends super

inherits sub

Answer 1

Q10 : Infinite Loop is niether an syntax error or a logic error; In certain condition, we might need to run a program for infinite time, even though in most of the cases we’ll avoid creating infinite loops but there could be some cases where we need to create one. In such scenarios, the loop will terminate when the application exits.

Q 11

it will run for counter = 1,3,5,7,9,11,13,15,17,19
So it will run the loop 10 times

Q12

Dividing two integers results in integer division, e.g. 7/3 = 2

Q13
int promoted to double
lower type are promoted to higher type, here double is higher type than integer

Q14
initialized before thier values are used in an expression

Q15
None of the above is true

Q16
c=3;
val=val+(c==3?2:3);
for this vase val will be incremented by 2

Q17
Divides x by 10 and stores the remainder in x.

Q18
0

c will have a value of 10, so 10%5 =0

Q19
String

Q20
double

Q21
4byte*8 = 32 bits

Q22
pixels

Q23
extends