beforeIteratorRemoveWhile.java

// "Replace the loop with Collection.removeIf" "true"
import java.util.*;

public class Main {
    public void removeEmpty(List<String> list) throws Exception {
        Iterator<String> it = list.iterator();
        while<caret>(it.hasNext()) {
            String str = it.next();
            // remove empty
            if(str.trim()/*trimmed empty*/
               .isEmpty()) {
                it.remove();
            }
            // everything is ok!
        }
    }
}