public class MoreModification
1: import java.util.ArrayList;
2: import java.util.List;
3: import java.util.ListIterator;
5: /**
6: * A program showing the proper way to change lists (using a ListIterator).
7: *
8: * @author Mark Young (A00000000)
9: */
10: public class MoreModification {
12: public static void main(String[] args) {
13: List<String> original = new ArrayList<>();
14: original.add("Ten");
15: original.add("Fifteen");
16: original.add("Twenty");
17: original.add("Thirty");
18: original.add("Fifty");
19: System.out.println("Original list: " + original);
21: // we can make a COPY of a list!
22: List<String> first = new ArrayList<>(original);
23: ListIterator<String> it1 = first.listIterator();
24: while (it1.hasNext()) {
25: String word = it1.next();
26: if (word.startsWith("F")) {
27: it1.remove();
28: }
29: }
30: System.out.println("F-words removed: " + first);
32: // we can make a COPY of a list!
33: List<String> second = new ArrayList<>(original);
34: ListIterator<String> it2 = second.listIterator();
35: while (it2.hasNext()) {
36: String word = it2.next();
37: if (word.startsWith("F")) {
38: it2.set(word.toUpperCase());
39: }
40: }
41: System.out.println("F-words in ALL_CAPS: " + second);
43: // we can make a COPY of a list!
44: List<String> third = new ArrayList<>(original);
45: ListIterator<String> it3 = third.listIterator();
46: while (it3.hasNext()) {
47: String word = it3.next();
48: if (word.startsWith("F")) {
49: it3.add(word.toLowerCase());
50: }
51: }
52: System.out.println("F-words duplicated: " + third);
53: }
55: }