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How to convert aray to list and list back to array?

Working with collections, sometimes you need to get an actual array that contains the list. Sometimes in Java array should be converted to List. Check it out how to...

This example code converts an array to a list:
List listOfStrings = Arrays.asList(arrayOfStrings);

On the fly list construction:
List listOfStrings = Arrays.asList(new String[]{s1, s2});

And how to convert a list into an array:
String[] arrayOfStrings = listOfStrings.toArray(new String[]{});
or
String[] arrayOfStrings = listOfStrings.toArray(new String[0]);

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mysql 5.0 upgrade to 5.1

The 5.1 series of MySQLwas unmasked for the gentoo portage. When upgrading from an older major version (including 5.0), you will be required to rebuild everything linked to the libmysqlclient.so.15 and libmysqlclient_r.so.15. You can do this by installing app-portage/gentoolkit and running: # revdep-rebuild --library libmysqlclient.so.15 # revdep-rebuild --library libmysqlclient_r.so.15 If you use the Portage 2.2 series, you may also use: # emerge @preserved-rebuild The official upgrade documentation is available here: http://dev.mysql.com/doc/refman/5.1/en/upgrading.html Note that existing databases may need converting as well, again including those upgrading from 5.0 to 5.1.