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:
64 comments Page 2 of 7.
Subhash said:
10 years 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:
9 years ago
Please explain the difference between the method overloading and method overriding?
(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)
Abhi said:
9 years ago
Why option 2 is wrong?
(1)
AVINASH said:
9 years 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:
9 years ago
The string default value is null.
So, why option 2 is wrong?
So, why option 2 is wrong?
(1)
Sireesha said:
9 years ago
What is that \u declared in char?
(1)
ShriKrishn Sharma said:
1 decade ago
Default value of char is "null space" it's Unicode is 32. If you want to print it using println function you get a white space over there.
Anonymous said:
9 years ago
Dear Sundar.
It's a static String which not consist quotes. Dog.
It's a static String which not consist quotes. Dog.
Shrikrishn Sharma said:
1 decade ago
Char's default value is not NULL nor 0 in Java.
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