core java

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Sun 7 Dec 2008

Live internet radio stream extractor

Posted by Pandian R under Announcement, core java
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radio.jpg

Friends,

This is to give you a code pack I wrote today. I was listening to one of the internet radios in Tamil. I want to store it on my hdd, the tools I searched dint helped me much. I want a simple tool, that saves my time. And It should be able to work in my absence. I wrote couple of classes, which I am going to test it now.

Why dont you test it youself :)
It doesnt require any installation. you need only three files.

mp3_stream_extractor.jar, The execution binary,
RUN.CMD, the invoking script
radio.properties, where you configure the radios

run the run.cmd, The audio is extracted to your home folder automatically.

Enjoy.

Download MP3 stream extractor

radio properties

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Fri 28 Mar 2008

java.io.UTFDataFormatException: Invalid byte 1 of 1-byte UTF-8 sequence

Posted by Pandian R under core java, unicode
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Hi,

I have taken a short break! There are many more error messages, which are keep on accumulating behind the screens. But I am so lazy to put them in grassfield.

Anyway, today I got interrupted with an interesting exception

java.io.UTFDataFormatException: Invalid byte 1 of 1-byte UTF-8 sequence

The scenario was, I am trying to parse an xml string. I am taking the byte array from the xml string, and give that array as input to xml reader stream. I have used java.lang.String.getBytes() for this.

Unfortunately, I got a chinese (or any other funny) characters as a value of one node in the xml. Ooof. I got up with the above error. Later, I found that getBytes() method supports only the western encoding, not UTF-8. So by using java.lang.String.getBytes("UTF-8") method, we solved the issue! nice na!

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Sun 16 Mar 2008

Java Runtime exec can hang

Posted by Pandian R under core java, java
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Today I was trying to extract the windows eventlog entries in my win-xp box. I have used Eldump to do this. please see my earlier post about this tool http://blog.grassfield.org/2007/06/24/fetch-your-eventlog-entries-with-eldump/ . I have used runtime.exec() to execute this command and extracted the information from the process streams.

The program was extracting the log entries, but hang in between, and went for endless sleep; i.e, the process never ended. Later with some googling, I was adviced to read error stream first, and then process output stream. Also both the streams need to be read concurrently with two threads. This could solve my issue. Try then!

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