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Java Programming - Language Fundamentals - Discussion

Discussion Forum : Language Fundamentals - General Questions (Q.No. 1)
Language Fundamentals
1.
Which four options describe the correct default values for array elements of the types indicated?
  1. int -> 0
  2. String -> "null"
  3. Dog -> null
  4. char -> '\u0000'
  5. float -> 0.0f
  6. boolean -> true
1, 2, 3, 4
1, 3, 4, 5
2, 4, 5, 6
3, 4, 5, 6
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 4 of 7.
Jayesh said:   9 years ago
Is dog is which type of data type is it enumerated data type are users defined the data type?
(3)
Asad said:   1 decade ago
Integer 0.
Float 0. 0.
Double 0. 0.
String null.
Character has nothing as default value.
Ravi said:   6 months ago
@All.

Here, String="null" is not correct because null is written in double parenthesis.
(3)
Subhash said:   10 years ago
All other datatypes are predefined except Dog, which is meaningless in this question.
Indu said:   9 years ago
Please explain the difference between the method overloading and method overriding?
(1)
Sunil said:   1 decade ago
Int-0.
Float-0.0.
Char-space.
Boolean-false.
Byte-0.
Short-0.
Long-0.
Double-0.0.
Manasa said:   1 decade ago
How can a char has a default value in terms of hexa-decimal?
Can any one clear?
Garima S said:   1 decade ago
Not able to undestand the given question.

Can anyone please explain it to me?
Amarjeetkaur said:   1 decade ago
Please tell me anyone, what is the history of java ? In briefly words.
Nani said:   5 years ago
Here, Dog is not a primitive data type. It is a user defined data type.
(24)
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