Question
This is for Java. Rewrite lines 1625 in Fig. 16.3 to be more concise by using the asList method and the LinkedList constructor that takes
This is for Java.
Rewrite lines 1625 in Fig. 16.3 to be more concise by using the asList method and the LinkedList constructor that takes a Collection argument.
// Fig. 16.3: ListTest.java // Lists, LinkedLists and ListIterators. import java.util.List; import java.util.LinkedList; import java.util.ListIterator;
public class ListTest { public static void main(String[] args) { // add colors elements to list1 String[] colors = {"black", "yellow", "green", "blue", "violet", "silver"}; List
for (String color : colors) list1.add(color);
// add colors2 elements to list2 String[] colors2 = {"gold", "white", "brown", "blue", "gray", "silver"}; List
for (String color : colors2) list2.add(color);
list1.addAll(list2); // concatenate lists list2 = null; // release resources printList(list1); // print list1 elements
convertToUppercaseStrings(list1); // convert to uppercase string printList(list1); // print list1 elements
System.out.printf("%nDeleting elements 4 to 6..."); removeItems(list1, 4, 7); // remove items 4-6 from list printList(list1); // print list1 elements printReversedList(list1); // print list in reverse order }
// output List contents private static void printList(List
System.out.println(); }
// locate String objects and convert to uppercase private static void convertToUppercaseStrings(List
while (iterator.hasNext()) { String color = iterator.next(); // get item iterator.set(color.toUpperCase()); // convert to upper case } }
// obtain sublist and use clear method to delete sublist items private static void removeItems(List
// print reversed list private static void printReversedList(List
System.out.printf("%nReversed List:%n");
// print list in reverse order while (iterator.hasPrevious()) System.out.printf("%s ", iterator.previous()); } } // end class ListTest
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