Access to problems with the Oracle database long Type field!

The problem with a long field I have encountered, if you want to take the value of a long field, you must see the processing.
To add a new method:
/**
* Insert the method´s description here.
* Creation Date: (2002-6-4-17:37:55)
*/
public static String getlargerstring (Java.io.Reader Reader) throws Exception {

char[] content = new char[1024000];
char[] buffer = new char[1024];
int len = 0;
int off = 0;
int contentlen = 1024000;

while (true)
{
Len = reader.read (buffer);
if (len = = 1)
Break
if (off + len > Contentlen)
{
char[] tmp = new Char[contentlen + 1024000];
System.arraycopy (content, 0, tmp, 0, off);
content = tmp;
Contentlen = Contentlen + 1024000;
}
System.arraycopy (buffer, 0, content, off, Len);
Off = off + len;
}

return new String (content, 0, off);

}
You need to include these statements in your program:
if (Rs.next ()) {
Java.io.Reader Reader = (java.io.Reader) rs.getcharacterstream ("N_total_point");
String strtmp = (string) getlargerstring (reader);
}

This is the way to take a long field, and if you want to insert a long field in the database, you need to work with