[sukatoa]

it would be nice if you try to design a method that has a parameter "String" and will return a boolean that represents true if the value receive is an integer or false otherwise.

What came first on mind is to put them on try/catch block.

Code:

boolean isInteger(String test){
     try{
          Integer.parseInt(test);
          return true;
     }catch(Exception e){
          return false;
     }
}

then invoke that method like

Code:

if(isInteger("7852862"))
     do something;
else
     jump;