True/False
Indicate whether the sentence or statement is true
or false.
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1.
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If
String name = "George W. Bush"; then the instruction name.length(); will return
14.
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2.
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If
String a = "ABCD" and String b = "abcd" then a.equals(b); returns
false.
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3.
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A
variable of type boolean will store either a 0 or a 1.
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4.
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In
Java, the symbol “=” and the symbol “==” are used synonymously
(interchangeably).
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5.
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The
statements x++; and ++x; will accomplish the same thing.
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6.
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The
statement { } is a legal block.
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7.
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The
statement if(a >= b) a++; else b--; will do the same thing as the statement if (a < b) b--;
else a++;.
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8.
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An if
statement may or may not have an else clause, but an else clause must be part of an if
statement.
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9.
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Java
methods can return only primitive types (int, double, float, char, boolean, etc).
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10.
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Formal parameters are those that appear in the method call and actual parameters are
those that appear in the method header.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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11.
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Consider the following statement:
System.out.println("1 big bad wolf\t8 the 3 little pigs\n4
dinner\r2night");
This statement will output ___ lines of
text
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12.
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If
you want to output the text "hi there", including the quote marks, which of the following
could do that?
a. | System.out.println("hi
there"); | c. | System.out.println("\"hi there");
| b. | System.out.println(""hi there""); | d. | System.out.println("\"hi
there\""); | | | | |
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13.
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A
Java variable is the name of a
a. | numeric data value stored in memory
| c. | data value
stored in memory that can not change its type during the program’s
execution | b. | data value stored in memory that can not change during the
program’s execution | d. | data value
stored in memory that can change both its value and its type during the program’s
execution | | | | |
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14.
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What
value will z have if we execute the following assignment statement?
float z = 5 / 10;
a. | z will equal
0.0 | c. | z will equal
5.0 | b. | z will equal
0.5 | d. | z will equal
0.05 | | | | |
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15.
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Which
of the following is true regarding the mod operator, %?
a. | It can only be
performed on int values and its result is a double | c. | It can only be performed on float or double values and its
result is an int | b. | It can only be performed on int values and its result is an
int | d. | It can only be
performed on float or double values and its result is a double | | | | |
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16.
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Given
the following code, where x = 0, what is the resulting value of x after the for-loop
terminates?
for(int i=0;i<5;i++)
x += i;
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17.
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How
many times will the following loop iterate?
int x =
10;
do
{
System.out.println(x);
x--;
} while (x >
0);
a. | 0
times | d. | 10
times | b. | 1 time | e. | 11 times | c. | 9
times | | | | |
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18.
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How
many times will the following loop iterate?
int x = 10;
while (x > 0)
{
System.out.println(x);
x--;
}
a. | 0 times | d. | 10 times | b. | 1
time | e. | 11
times | c. | 9 times | | | | |
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19.
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The
following nested loop structure will execute the inner most statement (x++) how many
times?
for(int j = 0; j < 100;
j++)
for(int k = 100; k > 0; k--)
x++;
a. | 100 | d. | 20,000 | b. | 200 | e. | 1,000,000 | c. | 10,000 | | | | |
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20.
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A
variable whose scope is restricted to the method where it was declared is known as a(n)
a. | parameter | d. | public instance
data | b. | global
variable | e. | private instance
data | c. | local
variable | | | | |
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