String Explosion

package com.company;

import java.util.*;

public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner scanner = new Scanner(System.in);
      String text = scanner.nextLine();
      StringBuilder builder = new StringBuilder();

        for (int i = 0; i < text.length() ; i++) {
            char symbol = text.charAt(i);
            builder.append(symbol);

            if (symbol == '>'){
                i++;

                int power = text.charAt(i) - '0';
                int j = i ;
                for (j = i; j < i + power && j < text.length(); j++) {
                    if (text.charAt(j)== '>'){
                        builder.append('>');
                        power += (text.charAt(j +1) - '0' + 1);
                        j++;
                    }
                }
                i = j - 1;

            }

        }
        System.out.println(builder.toString());
    }

}