help with length

[ama91]

i have this:
public class x1{
private String a;
private String b;

public void create(String a1,String b1){
this.a=a1;
this.b=b1
}

public String geta(){
return a;
}

public String getb(){
return b;
}
}

public class x2{
private int c;
private x1 d[];

public void create(){
this.c=0;
this.d= new x1[1];
}

public void add(x1 p){
if(c==d.length){
...}
}
}

public class test{
public static void main{
x2 h=new x2();
h.create();
x1 i=new x1();
String j="a";
String k="b";
i.create(j,k);
h.add(i);
}
}

trying to program this will say theres an error at the line where im using d.length, why?

[Fubarable]

What's the exact error message? Please post code with code tags (see my links below).

[al_Marshy_1981]

That code is riddled with errors

[ama91]

thats not all the program, it says arrayindexoutofbounds(but i dont think its because of the loop, thats why i didnt write )
i think that it doesnt recognizes method length for class x1(even if its not class x1, its an array of x1), i wrote System.out.println(d.length) and then told me the error was in that line

[al_Marshy_1981]

Can I see the code where you try to access elements of x1 array

[ama91]

(just in case you havent noticed yet)
i sent you all the code by private message

[Fubarable]

Please post it all here (with code tags), not in a private message.

[Dr.Fox]

For just the original question, d.length wont work because you havent given length any arguments. You should use d.length() i think, because length is a meathod.

[Junky]

For just the original question, d.length wont work because you havent given length any arguments. You should use d.length() i think, because length is a meathod.

No, d is an array and arrays have a length variable not a length method.

[Dr.Fox]

Ah my mistake :)

[ama91]

i tryed to write it again, now theres no errors
but is throwing an exception
i will just post that part of the program

public void add(x1 c) throws Exception{
	boolean q=true;
	int i=0;
	while(i<m && q){
		x1 per=this.d[i];
		if(per.gettl0().equals(c.gettl0())){
			q=false;
		}
		i++;
	}
	if(q==false){
		throw new Exception ("exception3");
	}
}

it must not enter the loop when m is 0, but is still throwing it...

[Junky]

it must not enter the loop when m is 0

You can always add another condition.

[ama91]

You can always add another condition.

why do i need another condition?
i is 0
m is 0
0<0==false

so why is still saying q!=true?
edit:it also says q==true
so how can it get the exception?
maybe cause it doesnt recognize m or d again
then im back to the first post: doesnt recognize d.length

[Junky]

How about instead of trying to fix your broken code you provide us with a detailed explanation of what you are trying to do. Then maybe we will be able to offer you advise that will point you in the right direction.

[ama91]

i think this is useless
well, thanks for trying to help

[Junky]

You get out of this forum what you put into it. If you can't be bothered providing relevant details and asking specific questions then how are we supposed to read your mind and provide you with the shiny code you obviously expect us to serve up to you.