public class StringTask {

    public static void main(String[] args) {
        String toModify = "git is a <<version control>> system for tracking changes in <<computer files>> and coordinating work on those files among multiple people";
        System.out.println(toModify.indexOf("<"));
        System.out.println(toModify.indexOf(">"));
        System.out.println(toModify.lastIndexOf("<"));
        System.out.println(toModify.lastIndexOf(">"));
        toModify = toModify.substring(0,9)+toModify.substring(11,26).toUpperCase()+toModify.substring(28,60)+toModify.substring(62,76).toUpperCase()+toModify.substring(78);
        // write your code here

        System.out.println(toModify.equals("git is a VERSION CONTROL system for tracking changes in COMPUTER FILES and coordinating work on those files among multiple people"));
    }

}