Parse String to Integer throws NullpointerException

Question

Hy!

I want to parse a String to a Integer. The String is like the format for series: SXXEXXX

The Code should increase the episode.

Like: S01E01 --> S01E02 Also: S01E100 --> S01E101

Code:

String s = episodes.get(episodes.size()-1);
Log.e("DBManager",s);
if (s.split("E").length <= 2) {
    int i = Integer.getInteger(s.split("E")[1].split(" ")[0]); //NullPointerEx
    return s.split("E")[0]+"E"+String.valueOf(i++);
}

Log:

10-26 15:56:34.635: E/DBManager(932): S00E01

Answer 1

Integer.getInteger() is not the correct method to use.

You should be using Integer.valueOf()

Integer.getInteger(String s) will return the integer system property with the key s.

The null pointer occurs because this method can't find the property with the key you supply and returns null. Java then tries to unbox this to an int and null pointers.