Hi..
I am new to java and need a help on this part

I am declaring a variable as below and it is showing error.. as identifier required.. help me out to understand the reason behind the same..

class abc
{

int a;
a=10; // on this point it is asking for identifier reuired
public static void main(String[] args)
System.out.println(a);
}

as i have already declared int a, why cant i assisgn a=10 in the next statement

Response ASAP .... appreciated..

Thanks in advance

Hi, Your code is
class abc
{

int a;
a=10; // on this point it is asking for identifier reuired
public static void main(String[] args)
System.out.println(a);
}


In this code you declear a variable a; Here it is Instance Label Varialbe. You cannot access a with any instance .
so, You have to define a to static or use with any instsance of it's class

This post has been edited by Tom Herry: Apr 21 2008, 01:35 AM

As Tom says, when you declare 'a' in your program, you are declaring it as an instance variable (also known as a 'member' of that class). These are used primarily in Object-Oriented Programming, unless they are static/final.

Again, as Tom says, you could declare it as static, or you could declare it within the main method.

Here are 3 ways of achieving what you want to do with this example:






Additionally, "a = 10" is whats known as an assignment statement. These cannot be executed where you had yours, they need to be inside a method or constructor.

Hope that helps.

This post has been edited by jpshortstuff: Apr 23 2008, 12:05 PM