How to get php content with java ??

Question

i have made a php file what will display a number,
here's a example
<?php
if ($action == "answer"){
echo "18274926";
?>
no i want to get the number with java
so here's my java code
import java.io.*;
import java.net.*;
import java.util.Date;
class URLConnecties
    public static void main(String args[]) throws Exception
        int teken;
        URL url = new URL("http://www.gamer.mineurwar.nl/net/javachallenge.php?command=DaTe");
        URLConnection urlconnection = url.openConnection();
        System.out.println("Type inhoud: " +
            urlconnection.getContentType());
        System.out.println("Datum document: " +
            new Date(urlconnection.getDate()));
        System.out.println("Laatst gewijzigd: " +
            new Date(urlconnection.getLastModified()));
        System.out.println("Document vervalt: " +
            urlconnection.getExpiration());
        int lengteinhoud = urlconnection.getContentLength();
        System.out.println("Lengte inhoud: " + lengteinhoud);
        if (lengteinhoud > 0) {
            InputStream in = urlconnection.getInputStream();
            while ((teken = in.read()) != -1) {
                System.out.print((char) teken);
            in.close();
}if you change the url ro a .html file it displays the code correctly(source),
but when trying to get the content of a php file (the number)
it says that there is no content from the php file
yhe source of the original php file what's in the code can be found at
www.gamer.mineurwar.nl/net/javachallenge.txt

Answer 1

The 'content' is generated dynamically by a PHP script so the "content lenght" can't be known in advance by the server. For this reason connection.getContentLenght() returns -1; it doesn't mean that there is no content, only that it can't be known how much there will be.
To solve the issue, remove the if statement from around the while-loop:// if (lengteinhoud > 0) { DELETE THIS LINE
InputStream in = urlconnection.getInputStream();
while ((teken = in.read()) != -1) {
    System.out.print((char) teken);
// } and this too