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hii,
please insert try/catch block and and insert
catch(Exception e)
{System.out.println( e);}
then the code will work fine..
Reagrds,
Devesh

Hi ,
One more thing that u can do is to use while loop and check for r being negative while(r>0) if so get the input from user and print the values of are a nad perimeter.
By the way ur area would...

Hiii All =P~

My name's Devesh . New to programming pursuing my carreer as to IT professional and new to JAVA. With time increase my knowledge and to become active contributor for others as to...