How to convert a .class to a .java file (decompiler)
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-content/plugins/smart-ads/smartads.php on line 341
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-content/plugins/smart-ads/smartads.php on line 341
As you may know, Java compiled files come in the extension of a class file. Sometimes, you may need to see others already Java compiled files and notice it can’t be done with usual editors. Class files don’t just open, they need to be decompiled back to Java files.
For that, theres a small decompiler called Jad, which you can easily convert class files to java files. Just download from here the Jad decompiler and run from the command line:
jad filename.class
The result will be a file filename.jad which can be opened with notepad. Jad is a 100% pure C++ program and is not an open source application. Don’t worry, its free to use.
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 35
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 107
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 109
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 111
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 112
December 15th, 2009 at
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 35
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 107
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 109
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 111
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /home/tomitzel/domains/tech.tomarea.com/public_html/wp-includes/functions.php on line 112
9:46 am
IMHO, the best java decompiler is Jad (v1.5.8g) at this moment. Unfortunately, it’s no longer maintained by the author. To improve the quality of decompiled code (or decompile Java 1.5+ classes), there’s a helper tool – JadRetro (the java generics are not supported but the generated source is functionally equivalent to the original in most cases).
It’s easy to use:
jadretro filename*.class
jad filename.class