servlet problem plz help

hello everyone
i have created a java application that has a textarea and a store and reset button below it....when i click on the store button(which has the submit property) the text gets append in the same line....but i want that they should some below the previous text...

for eg
1 hello and world when entered one after the another come as
hello world

i want them as
hello
world

actually here i am overwriting the string ,that i have taken as static....thats why when i call a html page in pw.println of servlet with that static string it overwrites the previous value...what concept shuld i apply here....should i go for array or something.....plz help

Don't double post.