Why some instance variables are passed to current contructor ..

Question

I wonder why some instance attributes are passed to contructor like
publi class A{
private int numberone;
public FileReader fr;
public BufferedReader br;
public A(FileReader fr,BufferedReader br){
this.fr = fr;
this.br=br;
You see int numberone is not passed but we can still use. why we can not do same with the FileReader and Buffer object? please explane
Thank very much
Jorg3

Answer 1

Deos anyone have a clue why this hapens?
Thanks a lot
Jorg3
Error: C:\LookupServer.java(30): Incompatible type for =. Can't convert int to java.lang.String.
while((line=br.read())!=null)save.addElement(line);
fr = new FileReader(file_name);
br = new BufferedReader(fr);
String line =" ";
while((line=br.read())!=null)save.addElement(line);
for(int i = 0; i<save.size();i++)
String k = (String)save.elementAt(i);
System.out.println(k);
}catch(Exception e){
System.out.println(e.toString());