Question

this is what i am doing:

String[] output = new String[index.length];

     try{   
       for(int i=0; i<index.length; i++){
          Statement st = con.createStatement();
          ResultSet res = st.executeQuery(
              "SELECT url FROM resources WHERE rid = "+(index[i]);

        while(res.next()){
           output[i] = res.getString("url"); //<-- this is where exception is thrown
       }
    } catch(...)

---

The Method is working but instead of printing the correct url value, it is priting someting like this:

[Ljava.lang.String;@85af80  

What does it mean? The url field in mySQL is VarChar, it worked fine with above methods but in this loop why i am getting the above result??

Answer 1

You haven’t initialized output[]!

Try this:

String[] output = new String[index.length];

That strange output is caused by printing the array, ie System.out.println(output);

Try this instead:

System.out.println(Arrays.toString(output));

It’s kinda lame, but java doesn’t automatically print the array contents, it prints the object type and address. The hint is the letter L at the start, which it uses to indicate an array