What is wrong with this code: import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String s = scan.nextLine();
    // Write your code here.
    int counter=0;
    int flag=1;
    boolean lastWasChar = false;
    String comp="!,?._'@ ";
    for(int i=0;i<s.length();i++){
        if(comp.contains(s.substring(i, i+1))){
            if((i+2)<s.length()){
            if(comp.contains(s.substring(i+1, i+2))){
                if(flag==1){
                    counter++;
                    flag=0;
                }
                continue;
            }
            }
            if(flag==1){
                counter++;
            }
            flag=1;
        }
        else {
    lastWasChar = true;
}
    }
    if (lastWasChar && !comp.contains(s.substring(s.length() - 1))) {
counter++;

} lastWasChar = false; System.out.println(counter); int ref=0; flag =1; for(int i=0;i if(comp.contains(s.substring(i, i+1))){ if((i+2)

            ref=i+1;
            flag=1;
        }
                    else {
    lastWasChar = true;
}
    }
                if (lastWasChar && !comp.contains(s.substring(s.length() - 1))) {
System.out.println(s.substring(ref, s.length()));

} scan.close(); } }