[RESOLVED] Array question in extends class

[newpat]

class a
{
     protected int barr[];
}

class b extends a
{
	public b(int barr[])
	{
		super(barr);
		barr[]= new int [4];
	}
}

why the above code can not work? how can i correct it?

[crptcblade]

Well, first, class a doesn;t define a constructor that takes in an int array. Next, it's bee a while, but I don't think you need the [] when assigning to the array.

And for future reference, it would make things easier on the people looking at your problem if you would list any compiler errors you are getting.

[newpat]

Well, first, class a doesn;t define a constructor that takes in an int array. Next, it's bee a while, but I don't think you need the [] when assigning to the array.

And for future reference, it would make things easier on the people looking at your problem if you would list any compiler errors you are getting.

thx for remind.
but assigning array is the step
int barr[];
barr=new barr[4];
................................................................

ok, now I according yr tips,then change it to the following

class a
{
	protected int barr[];
	public a(int barr[])
	{
		this.barr=barr;
	}
}

class b extends a
{
	public b(int barr[])
	{
		super(barr);
		barr[]= new int [4];
	}
}

but the error is same.

C:\Documents and Settings\Ying\a.java:15: not a statement
		barr[]= new int [4];
                    ^
C:\Documents and Settings\Ying\a.java:15: ';' expected
		barr[]= new int [4];
                      ^
2 errors

Tool completed with exit code 1

[CornedBee]

The compiler tells you exactly what's wrong. You cannot have barr[] in a statement. It's simply illegal.

Just remove the line. It's an effective no-op anyway. But if you wanted to assign to barr (note that you would be modifying the constructor parameter, not the member), you would remove the []. As blade said, you don't need it in an assignment.