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Java Elementary Programming Flashcards | StudBud
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Java Elementary Programming
Java Elementary Programming
30 terms
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Challenge yourself with a quiz on programming concepts and operators
Flashcards
30 cards
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Questions
30
Answers
1
What is the output of the following code
all of the above
Compilation error
5
Run-time error
2
The following Code produces a compilation error
False
True
3
What does \u0041 represent in Java's Unicode system?
A
Null
B
a
4
The following Code produces a compilation error
False
True
5
Which escape character represents a tab in Java?
\\
\t
\n
\a
6
What does 'charAt' method do?
Returns character
Concatenates strings
Returns length
Converts to uppercase
7
True or false: 'char' can store multiple characters
True
False
8
Which operator is for division?
\
+
/
*
9
What is the difference between x++ and ++x?
Both increment before use.
x++ increments before use; ++x increments after use.
Both increment after use.
x++ increments after use; ++x increments before use.
10
True or false: 'Final' declares constants
False
True
11
True or false: 'byte' is 8-bit
False
True
12
What happens in int y = ++x + x++;?
Pre and post increment both apply
Syntax error
Undefined behavior
Only pre-increment applies
13
Which method returns string length?
size()
measure()
count()
length()
14
True or false: 'double' is a numeric type
True
False
15
Which operator is for remainder?
+
*
-
%
16
What is the output of program
22
20
10
21
17
True or false: 'int' is a primitive data type
True
False
18
What is the output of following program ?
She said "Hello"
She said \\\"Hello\\"
She said Hello Kahoot Questions: Java Programming
Syntax error
19
What is the value of PI?
1.61
3.14
1.41
2.71
20
What is the result of 3 + 4 * 2 in Java?
20
7
14
11
21
Which operator is for multiplication?
-
/
+
*
22
what is the output of the following program?
run-time error
Syntax error
3
2.0
23
What is the output of the following?
6
7
4
5
24
What does 'parseInt' method do?
Converts to int
Converts to char
Converts to string
Converts to double
25
True or false: 'float' is 32-bit
False
True
26
What does \n represent in Java?
New line
Null
Backspace
Tab
27
Which escape character is used to insert a backslash (\) in a string?
\b
\\
\"
/
28
True or false: Identifiers can start with a digit
True
False
29
True or false: 'String' is a primitive type
True
False
30
What is the result of 3 + 4 * 2 in Java?
11
20
14
7
