Java String remove all characters after number

Question

This is my string address : London, Jon 2 A

And I want to see in my output see London, Jon

I tried to do this :

String result = chapterNumber.substring(0, chapterNumber.indexOf("1"));

But I have to do 10 times from different number maybe is better way to do this

Answer 1

try this

     String str = "London, Jon 2 A";
     System.out.println(str.replaceAll("\\d.*",""));

Answer 2

You can use regex with groups to get only the first group (the sequence of non-digit chars until the first digit):

String result = chapterNumber.replaceAll("([^\\d])(\\d.*)", "$1");

Answer 3

String s = "London, Jon 2 A";
Matcher matcher = Pattern.compile("\\d+").matcher(s);
matcher.find();
int i = Integer.valueOf(matcher.group());

System.out.println(s.substring(0,s.indexOf(String.valueOf(i))));

Answer 4

String result = chapterNumber.substring(0, chapterNumber.indexOf(","));