Sign up for FREE

Semester Final Review

Last updated about 2 years ago

130 questions

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

1

1

1

1

1

1

1

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

8.75

8.75

8.75

8.75

8.75

8.75

8.75

8.75

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

Question 21

21.

Question 22

22.

Question 23

23.

Question 24

24.

Question 25

25.

Question 26

26.

Question 27

27.

Question 28

28.

Question 29

29.

Question 30

30.

Question 31

31.

Question 32

32.

Question 33

33.

Question 34

34.

Question 35

35.

Question 36

36.

Question 37

37.

Question 38

38.

Question 39

39.

Question 40

40.

Question 41

41.

Question 42

42.

Question 43

43.

Question 44

44.

Question 45

45.

Question 46

46.

Question 47

47.

Question 48

48.

What is output by the code below?

System.out.println( Math.floor(9.567) );

Question 49

49.

What is output by the code below?

System.out.println( Math.ceil(7.23) );

Question 50

50.

What is output by the code below?
System.out.println( Math.pow(6,2) );

Question 51

51.

What is output by the code below?

System.out.println( (int)Math.pow( Math.sqrt(60),2) );

Question 52

52.

What is output by the code below?
System.out.println( Math.pow( Math.sqrt(25),2) );

Question 53

53.

What is output by the code below?
System.out.println( Math.floor(6.7) );

Question 54

54.

What is output by the code below?
System.out.println( Math.max(26,18) );

Question 55

55.

What is output by the code below?
System.out.println( Math.min(36,8) );

Question 56

56.

What is output by the code below?
System.out.println( Math.sqrt(64) );

Question 57

57.

What is output by the code below?
public class Fun
{
public int times(int num1, int num2)
{
return num1 * num2;
}
}
Fun aplus = new Fun();
System.out.println( aplus.times( 8, 6 ) );

Question 58

58.

What is output by the code below?
public class Fun
{
public int times(int num1, int num2)
{
return num1 + num2;
}
}
Fun aplus = new Fun();
System.out.println( aplus.times( 23, 13 ) );

Question 59

59.

What is output by the code below?
public class Fun2
{
public static int times(int num1, int num2)
{
return num1 * num2;
}
}
System.out.println( Fun2.times(6 , 7) );

Question 60

60.

What is output by the code below?
public class Fun2
{
public static int times(int num1, int num2)
{
return num1 + num2;
}
}
System.out.println( Fun2.times(5 , 5) );

Question 61

61.

How many methods does Bird contain?
public class Bird
{
public void speak()
{
out.println("chirp-chirp");
}
public void sayName()
{
out.println("baby bird");
}
}

Question 62

62.

How many return methods does Bird contain?
public class Bird
{
public void speak()
{
out.println("chirp-chirp");
}
public void sayName()
{
out.println("baby bird");
}
}

Question 63

63.

What is output by the code below?
public class Test
{
public void go()
{
out.print("A");
}
public void fun()
{
out.print("B");
}
}
Test x = new Test();
x.go();

Question 64

64.

What is output by the code below?
public class Test
{
public void go()
{
out.print("A");
}
public void fun()
{
out.print("B");
}
}
Test x = new Test();
x.go();
x.go();
x.go();

Question 65

65.

What is output by the code below?
public class Test
{
public void go()
{
out.print("A");
fun();
}
public void fun()
{
out.print("B");
}
}
Test x = new Test();
x.fun();
x.go();

Question 66

66.

What is output by the code below?
public class Test
{
public void go()
{
out.print("A");
}
public void fun()
{
out.print("B");
go();
}
}
Test x = new Test();
x.go();
x.fun();
x.fun();

Question 67

67.

Question 68

68.

Question 69

69.

Question 70

70.

Question 71

71.

Question 72

72.

Question 73

73.

Question 74

74.

Question 75

75.

Question 76

76.

Question 77

77.

Question 78

78.

Question 79

79.

Question 80

80.

Question 81

81.

Question 82

82.

Question 83

83.

Question 84

84.

Question 85

85.

Question 86

86.

Question 87

87.

Question 88

88.

Question 89

89.

Question 90

90.

Question 91

91.

Question 92

92.

Question 93

93.

Question 94

94.

Question 95

95.

Question 96

96.

Question 97

97.

Question 98

98.

Question 99

99.

Question 100

100.

Question 101

101.

Question 102

102.

Question 103

103.

Question 104

104.

Question 105

105.

Question 106

106.

Question 107

107.

Question 108

108.

Question 109

109.

Question 110

110.

Question 111

111.

Question 112

112.

Question 113

113.

Question 114

114.

Question 115

115.

Question 116

116.

Question 117

117.

Question 118

118.

Question 119

119.

Question 120

120.

Question 121

121.

Question 122

122.

Question 123

123.

Question 124

124.

Question 125

125.

Question 126

126.

Question 127

127.

Question 128

128.

int tot = 0;
for( int i=2; i<17; i++ ) {
tot = tot + i;
}
out.println( tot );

Question 129

129.

int count=0;
for(int j=4; j<23; j++) {
if(j%2==1)
count++;
}
out.println( count );

Question 130

130.

int sum=0;
for(int m=5; m<18; m++) {
if(m%2!=1)
sum=sum+m;
}
out.println(sum);

What is the output by the code below?
 System.out.println( 3 + " " + 3 );

3" "3

6

6 6

3 3

3

What is the ASCII value of a space?

32

36

48

97

65

Which of the following would print one backslash on the screen if used in a print( ) or  println( )?

\b

\\

\

\\\

/\

What is output by the following code?
  System.out.println(""+3+4+5);

75

345

12

39

there is no output due to a compile error

What is the output by the code below?
System.out.println("Hello ");
System.out.print("people ");
System.out.println("everywhere ");

Hello
people everywhere

Hello people everywhere

Hello
people
everywhere

Hellopeopleeverywhere

What is output by the following code?
 System.out.println(3+4+""+5*3);

36

757575

715

12

there is no output due to a compile error

What is the output by the code below?
int num = 5;
System.out.println("num");

num

num = 5

num 5

5

num: 5

What is the output by the code below?
System.out.println( "\"9" );

\

"9

99

9

\"9

What is the output by the code below?
char c = 65;
System.out.println(c);

0

65

c

a

A

Which of the following lines correctly defines a char variable?

char = a;

char c = ‘a’;

char ‘a’;

char c = a;

char = ‘a’;

Which of the following can be used to comment code in Java?

//

(

{*

[

}*

Which of the following is the tab character?

\t

\nl

\b

\n

\r

Which of the following lines correctly defines a String variable?

String s = cdef;

String s = "cdef";

s = "cdef";

String = "cdef";

String;

What of the following is not a legal reserved word for a java data type?

float

integer

char

short

double

What is the output by the code below?
int cost = 2.65;
System.out.println("Price: " + cost);

2.65

There is no output due to a error.

Price:

Price: 2.65

What is the output by the code below?
String s = "aplus";
System.out.println( s );

sulpa

s

aplus

plus

aplu

In Java, every program statement ends with a what ?

\

}

(

{

;

Every method must have an open and close what?

brace

chickens

bracket

period

semicolon

What is the output by the code below?
 System.out.print( "ap\\lus" );

aplus

us

ap\lus

apl

apl\us

Which of the following is a 32 bit data type?

short

int

char

long

double

Which of the following Scanner methods can be used to read in 65535 ?

a. nextShort()

b. nextInt()

c. nextByte()

d. A and B only

e. A, B, and C

Which of the following Scanner methods can be used to read in a line of words?

nextInt()

nextShort()

nextLine()

nextFloat()

nextLong()

Which of the following Scanner methods can be used to read in the value “apluscompsciisthebest”  ?

a. next()

b. nextDouble()

c. nextByte()

d. nextInt()

e. A and B only

Given the following statement, var must be defined as which of the following types?
var=keyboard.nextFloat();

float

byte

char

boolean

String

Given the following statement, var must be defined as which of the following types?
var=keyboard.nextLine();

float

byte

char

boolean

String

Which of the following Scanner methods can be used to read in a double?

a. nextInt()

b. nextDouble()

c. nextDble()

d. A and B only

e. A, B, and C

Given the following statement, var must be defined as which of the following types?
var=keyboard.nextLong();

short

byte

int

long

String

Which of the following Scanner methods can be used to read in a short?

nextByte()

nextShort()

nextshort()

nextShorts()

nextChar()

Which of the following is the Java class used for input?

a. Keyboard

b. Scanner

c. Reader

d. GetStuff

e. A and B only

Which of the following is used in the Scanner constructor to connect to the keyboard?

a. System.out

b. System.in

c. Keyboard.in

d. Keyboard.out

e. A and B only

Which of the following Scanner methods can be used to read in a String?

a. nextInt()

b. nextDouble()

c. next()

d. nextFloat()

e. nextByte()

Which of the following Scanner methods can be used to read in an integer?

a. nextInt()

b. nextDouble()

c. nextInteger()

d. A and B only

e. A, B, and C

Which of the following Scanner methods can be used to read in a byte?

nextInteger()

nextBite()

nextBite()

nextBite()

nextByte()

Which of the following Scanner methods can be used to read in the value
”apluscompsci is the best” ?

a. next()

b. nextLine()

c. nextByte()

d. nextInt()

e. A and B only

Which of the following would correctly define and instantiate a Scanner?

Scanner kb = Scanner(System.in);

Scanner kb = new Scanner(System.in);

Scanner new kb = Scanner(System.in);

Scanner kb = new kb(System.in);

none of these

Which of the following Scanner methods can be used to read in a long?

nextInt()

nextShort()

nextLine()

nextFloat()

nextLong()

Given the following statement, var must be defined as which of the following types?
var=keyboard.next();

float

byte

char

boolean

String

Which of the following Scanner methods can be used to read in 511.278 ?

a. nextDouble()

b. nextLong()

c. nextByte()

d. nextInt()

e. A and B only

Given the following statement, var must be defined as which of the following types?
var=keyboard.nextByte();

bytes

byte

bite

boolean

String

Given the following statement, var must be defined as which of the following types?
var=keyboard.nextDouble();

short

double

int

long

String

What is output by the code below?
double x = .5 + .5;
System.out.print(x);

0

1

0.0

1.0

2

What is output by the code below?
int x = 1;
x *= 5;
System.out.print(x);

0

1

2

3

5

What is output by the code below?
System.out.print( 4 - 3 );

-1

1

4

0

3

What is output by the code below?
System.out.print(4 % 3);

.5

1

2

0

3

What is output by the code below?
System.out.print( (int)9.6 );

10

6

9.0

9.6

9

What is output by the code below?
int x = 12,
y = 20;
int z = x + y;
double a = z;
System.out.print(a);

32.0

50

42

17.0

32

What is output by the code below?
System.out.println( 7 / 0);

0

7

0.7

27

There is no output due to a runtime error.

What is output by the code below?
public class Test
{
    public void go()
    {
        out.print("A");
        stop();
    }
    public void fun()
    {
        out.print("B");
        go();
    }
    public void stop()
    {
        out.print("C");
        
    }
}
Test x = new Test();
x.fun();

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.substring(4,5) );

l

p

a

s

u

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.substring( s.length()-1 ) );

i

s

a

p

ci

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.charAt( s.length()-3 ) );

i

c

p

s

a

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.charAt(0) );

p

a

c

i

s

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.charAt(5) );

p

i

u

s

c

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.indexOf( "s" ) );

9

5

4

6

3

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.indexOf( "apluscomp" ) );

0

1

2

3

4

What is output by the code below?

String s = "ishouldofstudied";
System.out.println( s.length() );

12

13

16

15

14

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.substring( 6 ) );

aplus

compsci

sci

o

ompsci

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.indexOf( "b" ) );

0

1

2

3

-1

What is output by the code below?

String s = "apluscompsci";
int x = s.indexOf( "c" );
System.out.println( s.substring( x )  );

compsci

sci

comp

aplus

pluscompsci

What is output by the code below?

int x = "alligator".length() - "crocodile".length();
System.out.println( x );

-1

2

0

1

-2

What is output by the code below?

int x = "crocodile".length() - "croc".length();
System.out.println( x );

-1

-5

0

1

5

What is output by the code below?

String s = "apluscompsci";
System.out.println( s.substring(0,2) );

a

ap

p

us

pl

What is output by the code below?

String s = "apluscompsci";
int x = 3;
System.out.println( s.substring(x,x+1) );

m

0

p

u

s

What is output by the code below?

String s = "dog";
String r = "dog ";
System.out.println( s.equals( r ) );

null

1

false

0

true

What is output by the code below?

String s = "dog ";
String r = new String("dog");
System.out.println( s.equals( r ) );

1

0

false

true

null

What is output by the code below?

String s = "dog";
String r = new String("dog");
System.out.println( s != r );

1

false

0

true

null

What is output by the code below?

String s = "dog";
String r = "dog";
r = s;
s = null;
System.out.println( r );

false

dog

null

true

s

What is output by the code below?

String s = "dog";
String r = s;
s = null;
System.out.println( s );

true

null

dog

s

false

What is output by the code below?

String s = "Big dog";
String r = "A dog";
System.out.println( s.compareTo(r)  );

0

false

true

1

null

What is output by the code below?

String s = "dog";
String r = "cog";
System.out.println( r.compareTo(s) );

-1

3

null

0

1

What is output by the code below?

String s = "dodge";
String r = "cloths";
System.out.println( s.compareTo(r) );

null

3

1

-1

0

What is output by the code below?

String s = "bob";
String r = "bod";
System.out.println( s.compareTo(r) );

-5

1

-2

6

-6

What is output by the code below?

String s = 12;
int x = Integer.parseInt( s );
System.out.println( x + 3 );

12

x3

There is no output due to an error.

0

15

What is output by the code below?

String s = "12.7";
Double x = Double.parseDouble( s );
System.out.println( x + 3 );

There is no output due to an error.

x3

15.7

12.7

0

What is output by the code below?

String s = "12.7";
double x = Double.parseDouble( s );
System.out.println( x + 3 );

12.7

15.7

0

x3

There is no output due to an error.

What is output by the code below?

String s = "12";
int x = Integer.parseInt( s );
System.out.println( s + x + 3 );

12123

12x3

27

There is no output due to an error.

1215

What is output by the code below?

System.out.println( "12" + 9 + 3 );

null

1212

There is no output due to an error.

24

1293

What is returned by the call     myst("aplus","aplus")?
public boolean myst(String a, String b)
{
    return a.equals( b );
}

true

null

1

0

false

What is returned by the call     myst("aplus","aplus")?
public boolean myst(String a, String b)
{
    return a == b;
}

0

1

null

false

true

What is returned by the call    myst("ana","banana")?
public boolean myst(String a, String b)
{
    return b.lastIndexOf(a)!=b.indexOf(a);
}

0

false

1

null

true

What is the purpose of myst?
public boolean myst(String a, String b)
{
    return b.lastIndexOf(a)!=b.indexOf(a);
}

to determine if there are at least two occurrences of a in b.

none of the above

to determine if a occurs exactly once in b

to determine if there are less than two occurrences of a in b

to determine if a is in b

What is returned by the call   go(60,78)?
public static String go(int x, int z)
{
   String s = "xyz";
   if(z > 60)
   {
      s += "def";
   }
   if(x <= 60)
      s += "ghi";
   return s;
}

def

xyzghi

ghi

xyz

xyzdefghi

Consider the following code segment.

String s = "red ball";
if(s.indexOf("a")>0)
    s = s + " zed";
if(s.indexOf("z")>0)
    s = "alpha " + s;
out.println(s);

What will be printed as a result of executing the code segment?

red ball

zed

alpha red ball zed

red ball zed

alpha

Consider the following code segment.

String s = "abac-adae-bfbg-bhbi";
int index = s.indexOf("b");
if(index > 0)
   out.println(s.substring(index));

What will be printed as a result of executing the code segment?

there is no output

bac-adae-bfbg-bhbi

-bfbg-bhbi 

bfbg-bhbi

bhbi

What is returned by the call   go(7) ?
public static int go( int a )
{
   int ans = 0;
   if(a>=7)
   {
      ans += 1;
   }
   ans += 2;
   return ans;
}

2

5

6

1

3

What is output by the code below?
String a = "1";
String b = new String("1");
if( a == b )
{
   System.out.print( "up" );
}
if( a.equals(b) )
{
   System.out.print( "on" );
}
System.out.print( "at" );

upon

uponat

onat

upat

There is no output due to an error.

Consider the following code segment.
double x = 19.8;
int y = 0;
if( x > 5 )
   y += 5;
if( x > 10 )
   y += 10;
if( x > 15 )
   y += 15;
out.print( y );
What will be printed as a result of executing the code segment?

10

15

0

5

30

Consider the following code segment.
String s = "even";
if(s.indexOf("a")>0)
   s = s + " zed";
if(s.indexOf("v")>0)
   s = "alpha " + s;
out.println(s);
What will be printed as a result of executing the code segment?

alpha

zed

alpha even

even zed

even

Consider the following code segment.
String s = "apple";
if(s.indexOf("a")>0)
   s = s + " zed";
if(s.indexOf("l")>0)
   s = "alpha " + s;
out.println(s);

alpha apple

zed

alpha

apple

alpha apple zed

What is output by the code below?
int b = 100;
if( b > 100)
   out.print("go");
else if( b > 90)
   out.print("it");
else
   out.print("up");
out.print("on");

on

upon

iton

goon

itupon

What is output by the code below?
int a = 75, b = 100;
if( a > 90)
   if( b > 100)
      out.print("go");
   else if( b > 90)
      out.print("it");
   else
      out.print("up");
out.print("on");

iton

itupon

on

upon

goon

What is output by the code below?
int a = 105, b = 120;
if( a > 90)
   if( b > 100)
      out.print("go");
   else if( b > 90)
      out.print("it");
   else
      out.print("up");
out.print("on");

upon

itupon

iton

goon

on

What is output by the code below?
int a = 105, b = 40;
if( a > 90)
   if( b > 100)
      out.print("go");
   else if( b > 90)
      out.print("it");
   else
      out.print("up");
out.print("on");

goon

iton

itupon

on

upon

What values will be stored in c and d after execution of the following program segment?
int c = 5, d = 10;
if(d>c){
   if(c > 50)
      c /= 2;
   else
      c = d-c;
   d = d/5;
}
else{
   c = c/2;
   d = d/2+3;
}

c = 6 d = 2

c = 6 d = 1

c = 5 d = 2

c = 7 d = 1

c = 6 d = 5

What values will be stored in c and d after execution of the following program segment?
int c = 12, d = 3;
if(d>c){
   if(c > 50)
      c /= 2;
   else
      c = d-c;
   d = d/5;
}
else{
   c = c/2;
   d = d/2+3;
}

c = 13 d = 3

c = 6 d = 3

c = 9 d = 5

c = 6 d = 4

c = 7 d = 3

What is output by the code below?

int j = 11/2;
switch(j)
{
   case 5:j++;break;
   case 6:j++;break;
   case 7:j++;break;
}
System.out.println(j);

7

5

6

0

8

What is output by the code below?
int x= 11;
switch( x )
{
   case 11 : System.out.print("it");
   case 21 : System.out.print("go");
   case 98 : System.out.print("up"); break;
}

itgo

itgoup

goup

it

go

What is output by the code below?

int b = 110;
if( b > 100)
   out.print("go");
else if( b > 90)
   out.print("it");
else
   out.print("up");
out.print("on");

goon

iton

itupon

on

upon

What is output by the code below?
int b = -5;
if( b > 100)
   out.print("go");
else if( b > 90)
   out.print("it");
else
   out.print("up");
out.print("on");

itupon

on

iton

upon

goon

What is output by the code below?

for(int i=0; i<=10; i=i+2)
   out.print(i);

02468

024681012

10

0246810

246810

What is output by the code below?
for(int i=5; i<20; i=i+3)
    out.print(i);

581114

58111417

5811141720

581114172023

8111417

What is output by the code below?
for(int i=15; i>2; i=i-2)
    System.out.print(i);

15131197531-1

151311975

13119753

1513119753

15131197531

What is output by the code below?
int ans = 0;
for(int i=10; i>-1; i=i-2)
    ans += i;
System.out.print( ans );

25

27

32

29

30

What is output by the code below?
int ans = 0;
for(int i=0; i<12; i=i+3)
    ans += i;
System.out.print( ans );

25

30

18

20

27

What is output by the code below?
int ans = 0;
for(int i=0; i<20; i=i+3)
    if( i % 2 == 0 )
        ans += i;
System.out.print( ans );

27

30

20

25

36

What is returned by the call      go( 7 ) ?
public static String go( int x)
{
    String s = "";
    for(int n = x; n > 0; n = n - 2)
        s = s + n + " ";
    return s;
}

7 5

7 5 3

7 5 3 1

7

1

What is returned by the call      go( 17 ) ?
public static int go( int x)
{
    int val = 0;
    for(int n = 1; n < x; n = n + 4)
         val = val + n;
    return val;
}

20

24

28

22

25

What is returned by the call      go( 7, 12 ) ?
public static int go( int x, int y)
{
    int cnt = 0;
    for(int n = x; n < y; n = n + 1)
         if(n % 2 != 0 )
            cnt++;
    return cnt;
}

5

2

3

6

4