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 5 of 7.
Piyush gadekar said:
2 decades ago
What your are tryng to admit from this program?
Shaswati said:
2 decades ago
How option 4 is correct? I could not understand. Please explain about the default data type of char.
Sundar said:
2 decades ago
@Shaswati
It is nothing but a class created by a user.
Ex: Dog, Student, Car etc.
The question is 'what will be default value?'.
Student objStud1;
Here objStud1 will contain 'null' value by default.
It is nothing but a class created by a user.
Ex: Dog, Student, Car etc.
The question is 'what will be default value?'.
Student objStud1;
Here objStud1 will contain 'null' value by default.
Prathyusha said:
2 decades ago
HI,
No where the "Dog" datatype is mentioned.
If Dog is integer , the default might be -0
If Dog is float , the default might be -0.0f
If Dog is object ,the default might be -null
.... No where it is mentioned whether Dog is wat datatype.
HELP ME IN THIS REGARD.....
No where the "Dog" datatype is mentioned.
If Dog is integer , the default might be -0
If Dog is float , the default might be -0.0f
If Dog is object ,the default might be -null
.... No where it is mentioned whether Dog is wat datatype.
HELP ME IN THIS REGARD.....
Suganthan.M said:
2 decades ago
Dog - There is no primitive datatype like 'Dog'. It is a User Defined type. By default it will hold null value.
Suresh said:
2 decades ago
Nice answers
Kathirozhi said:
1 decade ago
Plese correctly tell the char default value is nothing or not null or the answer in the question please help to understand.
Rehana said:
1 decade ago
What is that \u declared in char?
Sivachandran said:
1 decade ago
@Kathirozhi not null and nothing nice answers.
Amarjeetkaur said:
1 decade ago
Please tell me anyone, what is the history of java ? In briefly words.
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