Checking for Plugin-Updates

Hi!

here a little and easy code, how to check if a newer Version of the plugin exists

Just create a new Class named "checkUpdate", and paste this Code in it: (Don't forget to add the package!)

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Code:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
 
import org.bukkit.plugin.java.JavaPlugin;
 
public class checkUpdate {
 
public static void upCheck(JavaPlugin jp, Float version, String uRl, String upMsg, boolean stopOnUpdate, String stopMsg) throws IOException, MalformedURLException{
URL url = new URL(uRl);
url.openConnection();
URLConnection yc = url.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
        String inputLine = in.readLine();
        
        Float cv = Float.parseFloat(inputLine);
        if(cv > version){
System.out.println(upMsg);
if(stopOnUpdate){
jp.getServer().getPluginManager().disablePlugin(jp);
System.out.println(stopMsg);
}
}
        
        in.close();
}
 
}
 
}

How to use?

It's simple! In the Main Class in the onEnable:

Code:

try {
checkUpdate.upCheck(theplugin, Float version, String "url", String updatemsg, boolean b, String shutdownmsg);
} catch (MalformedURLException e) {
System.out.println(String wrongUrl);
} catch (IOException e) {
System.out.println(String connectionError);
}

Explanation:

theplugin - The Plugin-Mainclass. Just write "this"

version - The Float of the current Version

url - The url to a File, more Infos below.

updatemsg - If a newer Version is available, this String is written in the console

b - A boolean. If true, the plugin will shutdown if a update is available.

shutdownmsg - The msg wich appears in the console if a newer version is available & b is true.

Example in use:

In the Main:

Code:

 
public void onEnable(){
 
try {
checkUpdate.upCheck(this, v, "http://dl.uniclaw.net/plugins/update.txt", uN, true, "[" + pluginname + version + "]Plugin shutting down..");
} catch (MalformedURLException e) {
System.out.println("[" + pluginname + version + "]Error while searching for updates");
} catch (IOException e) {
System.out.println("[" + pluginname + version + "]Connection Error.");
}
}
 
 
//PLUGINNAME & VERSION & UPDATE
public String pluginname = "Testing PLugin ", version = "v1.0", uN = "[" + pluginname + version + "]A newer Version is availabe. Please re-download & install this Plugin.";
public float v = 1.0F;

Okay, now the Output if the Float in "update.txt" is greater than the Version, and the shudown option is true:

Code:

[Testing PLugin v1.0]A newer Version is availabe. Please re-download & install this Plugin.
[Testing PLugin v1.0]Plugin shutting down..

Without the Shutdown option:

Code:

[Testing PLugin v1.0]A newer Version is availabe. Please re-download & install this Plugin.

That it !

Just note: The File given in the url MUST contains the Version in the first line.

Greet

 

How am i supposed to put the version in the file? i get errors each time i try...