Error accessing data

Question

Hi,
I'm new to Java and wonder if anyone out there can help me spot the error in my code...
Basically, I have three classes which do the following;
MyApplication is a utility class which contains a main method, in which a connection to a web page is made and the web site is read from... an instance of another class is created and in this class
a particular string pattern is looked for and a string extracted...if the pattern appears an object of a separate class is called, and this class further refines the string extraction.
In my top-level class I have been trying to printout the result of the string manipulation,
while ((r= new RdfDescription(in)) != null) {
d[j] = r;
System.out.println(MyApplication.d[j]);
j++;
} //while
rdfDescription d [] is a static data member in the MyApplication class and r is an instance of another class.
However, I get garbage and I'm not sure why! Can anyone please help me?
Thanks for any ideas!

Answer 1

Thanks for your help - it was v. useful - can you tell me where I am going wrong with trying to access and set an array of objects?
Thanks in advance!
I have 4 classes - one of which, say Class Test contains 3 related strings. I have
a String toString() method in this class which returns getA + getB + getC, (getA
etc. just returns the value as a string)
public String getA() {
return A;
} etc.
public String toString () {
return getA() + getB() + getC();
so that these can be accessed in another class as strings. This works OK,
public void setT (Test t) {
t.toString();
but I have another object which is an array of Test objects and I am confused
how to set this toString() method and get method as I'm dealing with an array of
objects.
public Test[] getTt () {
for(int k=0; k<4; k++)
return tt[k] = ???
Not sure about this but if RdfDescription is a class
you have written then you'll probably need to give it
a toString() function and call this. Printing under
Java does not always do what you think but it does
make sense.
e.g. if you have a byte array and you want to print
the contents of it, just writing
byte[] bytes = new byte[100];
System.out.println(""+bytes);
will not give you the contents of the array. Instead,
it will print what looks like the address of the first
element in the array.
So if RdfDescription is your class and it contains a
character array or a String object then you will need
to provide a toString() which prints out the
characters or calls String.toString()
Hope this helps.