character encoding - java- how to obtain/store string variables which have different charsets -

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i have data in variable of type list. different elements in list encoded in different charsets. know charset corresponding each element.

i want know: how extract each string in respective charset?

also, if have text being entered java application user (along charset), how can store each value in list variable? , how can store/retrieve such value in string variable?

and after data stored/retrieved, changes of charset mean default charset (utf-8) no longer being used? if case, how can restore default charset?

a string stored (internal) unicode. need handle charsets if convert bytearrays strings or strings bytearrays.

see: http://docs.oracle.com/javase/tutorial/i18n/text/string.html example.


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