Regex3.java

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package devsought;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Regex3 {

    public static void main(String... args) {
        String str = "John_kyalo end of term scores were as  follows;Math 72%,English 65%,Science 85% , Commerce 45% and Computer studies 109% .Overall class position number 12";
        Pattern pattern = Pattern.compile("(\\b\\d{1,3}\\b)(%)");//(\\b\\d{1,2}\\b)(.+?)    (\\b\\d{1,3}\\b)(%)  \\b(\\d{1,3}%?)\\b    \\b(\\d{1,3})(%)?\\b    (\\d{1,3})(%+)
        Matcher matcher = pattern.matcher(str);
        int sum = 0;
        int count = 0;
        while (matcher.find()) {
            String subsequence = matcher.group();
            //System.out.println(subsequence);
            System.out.println("G0::" + matcher.group(0));
            System.out.println("G1::" + matcher.group(1));
            System.out.println("G2::" + matcher.group(2));
            System.out.println("GroupCount::" + matcher.groupCount());
            Double mark = Double.valueOf(matcher.group(1));
            if (mark > 100.00) {
                mark = 100.00;
            }
            sum += mark;
            count++;
           
        }
        System.out.println("Total score=" + sum + " ,avg=" + (sum / count));
        System.out.println(str);
    }
}