java - How to be sure about Integer value of a JTextfield? -

this question has answer here:

• is there way accept numeric values in jtextfield? 19 answers
• restricting jtextfield input integers [duplicate] 6 answers

i have jtextfield users must enter number in that.

i want check value sure contains **integer*.*

here code:

jtextfield tex_amount=new jtextfield(); . . . string s=tex_amount.gettext();  int a=integer.parseint(s); 

the problem if user enter string in field face error: java.lang.numberformatexception. how can check value?

you can use try..catch

try{     int = integer.parseint(s); } catch(arithmeticexception e){     //handel error here  }