Is there a method in Java in which to see if an integer value contains characters?
By definition, an integer value does not contain characters (apart from the minus sign), otherwise the value is invalid.
If you have a String and would like to check for foreign characters, you can try:
the matches() method using a regular expression.
For example, if you suspect alphabetic characters, you can check using:
if(someString.matches("[a-zA-Z]")
{
// do something
}
If you want to scan for all non-numeric characters, you can replace with
...matches("[^0-9]")...