Java Programming - Language Fundamentals - Discussion

@Kathirozhi not null and nothing nice answers.

What is that \u declared in char?

Plese correctly tell the char default value is nothing or not null or the answer in the question please help to understand.

Nice answers

Dog - There is no primitive datatype like 'Dog'. It is a User Defined type. By default it will hold null value.

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.....

@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.

How option 4 is correct? I could not understand. Please explain about the default data type of char.

What your are tryng to admit from this program?

Dear Sir,

1) Default value for array element of type char is nothing , not even null
2) Default value for array element of type float is 0.0 not 0.0f

class hello
{
public static void main(String str[])
{
int i[] = new int[5];
float f[] = new float[5];
double d[] = new double[5];
String s[] = new String[5];
char c[] = new char[5];
boolean b[] = new boolean[5];

System.out.println("Hello World");
System.out.println("Integer "+i[0]);
System.out.println("Float "+ f[0]);
System.out.println("Double " + d[0]);
System.out.println("String " + s[0]);
System.out.println("Character " + c[0]);
System.out.println("Boolean " + b[0]);
}
}