Object creation problem.

[Ravinder Partap]

Code:

public class Hello
{
public Hello()
{
System.out.println("a");
}
public void test(){}
public static void main(String arg[])
{
Hello h = new Hello();
Hello h=new sub();// this is not compiling

}
class sub extends Hello
{
Hello h=new sub();
public sub()
{
super();
System.out.println("s");

}

}
}

Query:- Why we can't do "Hello h=new sub();" in the main method in this class?

[Joanne Neal]

Did you read the error message ? I think it's very clear about what the problem is.
If you don't understand the error message, post it here and someone will explain.
[ March 27, 2008: Message edited by: Joanne Neal ]

[K Aditi]

Hello h=new sub();// this is not compiling

You are declaring h again!

[Ravinder Partap]

Oh, I forgot that while experimenting all the option I already had used variable h.
Still converting this variable "h" to "h1" in following line

Hello h=new sub();// this is not compiling

Make it as:-

Hello h1 = new sub();

Now still it doesnt gets compiled.

[Kamlesh Kr]

if you don't need to make inner class, just try bring 'sub' class our of Hello and try it. like this:

public class Hello
{
public Hello()
{
System.out.println("a");
}
public void test(){}
public static void main(String arg[])
{
Hello h = new Hello();
Hello h=new sub();// this is not compiling

}
}

class sub extends Hello
{
Hello h=new sub();
public sub()
{
super();
System.out.println("s");

}

}

[Kamlesh Kr]

Or if you need the inner class try this:
public class Hello {

public Hello() {
System.out.println("a");
}

public void test() {
}

public static void main(String[] arg) {
Hello h = new Hello();

Hello h1=h.new sub();// this is not compiling
}

class sub extends Hello {
Hello h = new sub();

public sub() {
super();
System.out.println("s");
}
}
}

[Ravinder Partap]

Thanks Kamlesh ! Your second answer cleared all my doubts.