java - Logger output to string -

i'm pretty new java , question noobish, can't figure out.

i'm having logger logger = logger.getlogger(myclass.class.getname());

and want output of logger string. example when

logger.info("some message");  logger.warning(" warning"); 

i want string somestring = "some message somewarning"

i'm looking similar

bytearrayoutputstream loggercontent = new bytearrayoutputstream(); system.setout(new printstream(loggercontent)); textview tv = (textview)findviewbyid(r.id.txt_1); tv.settext(loggercontent.tostring()); 

but i'm failing achieve it. possible , how?

edit: want string used in activity show on screen.

bytearrayoutputstream loggercontent = new bytearrayoutputstream();  printstream prstr = new printstream(loggercontent);  streamhandler streamhandler = new streamhandler(prstr, new simpleformatter()); 

i tried before posted here , couldn't result. works, had .flush() streamhandler before trying loggercontent.tostring(). responses guys. :)