The PrintObjectPageInputStream class has a nextPage() method to move to the next page.
BufferedReader d = new BufferedReader(new InputStreamReader(is));
String data = "";
do {
while((data = d.readLine()) != null)
{
System.out.println (data);
jTextArea1.setText(jTextArea1.getText()+"\n"+data);
}
} while (d.nextPage());
Use PrintObjectTransformedInputStream to read an entire spooled file without paging.