Java Programming - Language Fundamentals - Discussion
Discussion Forum : Language Fundamentals - General Questions (Q.No. 1)
1.
Which four options describe the correct default values for array elements of the types indicated?
- int -> 0
- String -> "null"
- Dog -> null
- char -> '\u0000'
- float -> 0.0f
- boolean -> true
Answer: Option
Explanation:
(1), (3), (4), (5) are the correct statements.
(2) is wrong because the default value for a String (and any other object reference) is null, with no quotes.
(6) is wrong because the default value for boolean elements is false.
Discussion:
67 comments Page 2 of 7.
Madhav said:
3 months ago
B is the correct answer.
(3)
Nisa said:
3 months ago
Any text written inside double quotes in Java is a String literal, which refers to a String object.
Am I right?
Am I right?
(2)
Dinesh saini said:
1 decade ago
why (3) is correct, as we don't know the data type of DOG so we can't say what will be the default that it may hold.
If DOG is any object then 'DOG -> null' will be ok but here we don't know anything about the word DOG so default value can't be assumed by words.
If DOG is any object then 'DOG -> null' will be ok but here we don't know anything about the word DOG so default value can't be assumed by words.
(1)
Abhi said:
1 decade ago
Why option 2 is wrong?
(1)
Muthamil.A said:
1 decade ago
char default value "space" in java .
char default value \u0000 in c.
dog s a object so that default value null.
char default value \u0000 in c.
dog s a object so that default value null.
(1)
Subhash said:
1 decade ago
Int-0.
Float-0.0f or 0.0F.
Char-'\u0000'.
Boolean-False.
Byte-0.
Short-0.
Long-0.
Double-0.0 or 0.0d or 0.0D.
Float-0.0f or 0.0F.
Char-'\u0000'.
Boolean-False.
Byte-0.
Short-0.
Long-0.
Double-0.0 or 0.0d or 0.0D.
(1)
Indu said:
1 decade ago
Please explain the difference between the method overloading and method overriding?
(1)
AVINASH said:
1 decade ago
Int-0.
Byte-0.
Short-0.
Long-0.
Double-0.0 or 0.0d or 0.0D.
Float-0.0f or 0.0F. Here f means float type default value 0.0.
Char-'\u0000' or space.
Boolean-False.
String - null.
Byte-0.
Short-0.
Long-0.
Double-0.0 or 0.0d or 0.0D.
Float-0.0f or 0.0F. Here f means float type default value 0.0.
Char-'\u0000' or space.
Boolean-False.
String - null.
(1)
Senthil said:
1 decade ago
The string default value is null.
So, why option 2 is wrong?
So, why option 2 is wrong?
(1)
Sakshi Varma said:
4 months ago
The right answer is B.
(1)
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