如何检查字符串是否包含Java中的数字格式？

I am new to applet concept. I want to implement the one application. The applet have 2 text areas and one button. The first text area is the input(means it contains some text).Second Text area is empty.If you click on the button then the text in the first text area is parsed(here parsed means first text area text contains some text right? that text contains some number here that numbers will be removed and remaining text will be pasted in the second text area) EX: Text area1: 1. stack Overflow 2 Google 3 yahoo after button click Text area2: stack Overflow Google YahooI am new to applet concept. I want to implement