What's the best way to check if a String represents an integer in Java?

Question

I normally use the following idiom to check if a String can be converted to an integer.

public boolean isInteger( String input ) {
    try {
        Integer.         


        

Answer 1

If your String array contains pure Integers and Strings, code below should work. You only have to look at first character. e.g. ["4","44","abc","77","bond"]

if (Character.isDigit(string.charAt(0))) {
    //Do something with int
}