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.
Suresh said:
1 decade 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.
Gaurav said:
1 decade ago
The most important feature of Java language is that it is Architecture Neutral. Earlier softwares were build for specific operating systems, Like softwares build for Windows They run only in windows not in other os like linux, unix, max etc. To resolve this A new language was introduced by Sunmicrosystems Known as Java and so many features were introduced in this language which makes it a powerful language.
Deepi said:
1 decade ago
Char default value is a space only know then how?
Basha said:
1 decade ago
Hi All,
default values are given as follows:
Int------>0
String---> null
Dog (Object)------->null
Char -------------->"\u0000". it is hexa decimal representation of asii code of the chars. I think "\u0000" represents "space".
boolean------------> false.
Done.
default values are given as follows:
Int------>0
String---> null
Dog (Object)------->null
Char -------------->"\u0000". it is hexa decimal representation of asii code of the chars. I think "\u0000" represents "space".
boolean------------> false.
Done.
Ranjith said:
1 decade ago
Hi , in the given programe the dog is a object ,
which may any data type
the below programe illistreates
class Dv
{
int x;
}
class DefaultValues
{
public static void main(String str[])
{
Dv dog=new Dv();
int a[] = new int[5];
float b[] = new float[5];
double c[] = new double[5];
String d[] = new String[5];
char e[] = new char[5];
boolean f[] = new boolean[5];
System.out.println("Hi ,The Default Values: ");
System.out.println("For Object :"+dog.x);// here dog is object
System.out.println("Integer "+a[0]);
System.out.println("Float "+ b[0]);
System.out.println("Double " + c[0]);
System.out.println("String " + d[0]);
System.out.println("Character " + e[0]);
System.out.println("Boolean " + f[0]);
}
}
which may any data type
the below programe illistreates
class Dv
{
int x;
}
class DefaultValues
{
public static void main(String str[])
{
Dv dog=new Dv();
int a[] = new int[5];
float b[] = new float[5];
double c[] = new double[5];
String d[] = new String[5];
char e[] = new char[5];
boolean f[] = new boolean[5];
System.out.println("Hi ,The Default Values: ");
System.out.println("For Object :"+dog.x);// here dog is object
System.out.println("Integer "+a[0]);
System.out.println("Float "+ b[0]);
System.out.println("Double " + c[0]);
System.out.println("String " + d[0]);
System.out.println("Character " + e[0]);
System.out.println("Boolean " + f[0]);
}
}
Manasa said:
1 decade ago
How can a char has a default value in terms of hexa-decimal?
Can any one clear?
Can any one clear?
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