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import java.util.Arrays;
import java.util.List;
import java.util.ListIterator;
public class MainClass {
static void listTrim(List<String> strings) {
for (ListIterator<String> lit = strings.listIterator(); lit.hasNext();) {
lit.set(lit.next().trim());
}
}
public static void main(String[] args) {
List<String> l = Arrays.asList(" red ", " white ", " blue ");
listTrim(l);
for (String s : l) {
System.out.format("\"%s\"%n", s);
}
}
}
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