Log4j anyone???

Thor_2.0 · 04-18-2009, 06:52 AM

Hi,

I need some logging mechanism in my Java development. The dev setup is as follows (just to give you an idea) server CentOS 5.2 with java 1.6, PHP and mySQL on the one end, and Fedora 10, (openJDK?) on the dev side. Ok, so I have a website on the server that I "surf" to (entering the IP address - life CAN be simple) and call up an info page that is on the server...not. I get a blank page - applet (possibly) crashed on me...

Result: I need to log what the applet screams before it dies on me, enter log4j.

Just to test, this is what I "fumbled" up as test applet:

Quote:

import java.awt.*;
import java.applet.*;
import org.apache.log4j.Logger;

/**
* @author t01dev
*
*/
public class Ploop extends Applet
{
// declare some stuff here
Logger myLogger = Logger.getLogger("Ploop");

public void init()
{

}

public void paint(Graphics g)
{
g.setColor(new Color(100,45,14));
g.drawString("Ploop rules!", 10, 10);
}

}

with this as HTML:

Quote:

<html>
<head>
<title>Ploop test</title>
</head>
<body>
<APPLET CODE="Ploop.class" name="plooptest" WIDTH=400 HEIGHT=100>
</APPLET>
</body>
</html>

the browser (firefox - of course) says "applet not initialised" in the status bar...

What? Where? Huh???

Please help, tnx

Thor

paulsm4 · 04-18-2009, 12:34 PM

Hi -

Log4J is great for debugging server-side stuff ... but frankly, I'd just use a simple "MsgBox" popup on your (applet) client:

EXAMPLE:

Code:

import java.awt.*;
...
  JOptionPane.showMessageDialog(this,
    "Howdy!",
    "Debug",
    JOptionPane.INFORMATION_MESSAGE,
    Icon);

IMHO .. PSM

Thor_2.0 · 04-19-2009, 11:37 AM

Hi,

Hmmmpfff...after H-O-U-R-S of skimming tru tons of lecture, it's possibly the better sollution.

Too bad, If I had a java console as promissed by FireFox's extentions...but that does'nt work. I have "java console" in the tools menu, but nothing happens, so I am/was looking for some way to log an applet...

Eh, who said life is sweet...did'nt try setting up log4j...

Enjoy what is left of your weekend, I will

Thor