Java – how to calculate the length of multiple strings

I have a string like this:

Hey, my name is $name $; I'm over $years old. I like playing $sport $. I live in $country $!

I want to return the length of each word between $in the map. For example, my map should be:

>Name – > 4 > years – > five > Sports – > five > countries – > 7

At first I thought about making recursive calls in my functions, but I couldn't do that?

Solution

You can use pattern and matcher to match, which will return all matching instances, and then you can iterate the results and add them to the map

String x = "Hey my name is $name$; I have $years$years old," + 
           "and I love play $sport$and I live in $country$!";
Pattern p = Pattern.compile("\\$\\w+\\$");
Matcher m = p.matcher(x);
Map<String,Integer> map = new LinkedHashMap<>();

while(m.find()) {
  String in = m.group().substring(1,m.group().length()-1);
  map.put(in,in.length());
}