Oprea

CollectionMethoddsSort

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import java.util.*;

public class apple {

public static void main(String[] args) {

String[] crap = {"apples", "lemons", "geese", "youtube" };

List<String> l1 = Arrays.asList(crap);

Collections.sort(l1);
System.out.printf("%s ", l1);

Collections.sort(l1, Collections.reverseOrder());
System.out.printf("%s ", l1);

//create an array and convert to list
Character[] ray = {'p', 'w', 'n' };
List<Character> l = Arrays.asList(ray);
System.out.println("List is: ");
output(l);

//reverse and print out the list
Collections.reverse(l);
System.out.println("After reverse: ");
output(l);

//create a new array and a new list
Character[] newRay = new Character[3];
List<Character> listCopy = Arrays.asList(newRay);

//copy contents of list into listcopy
Collections.copy(listCopy, l);
System.out.println("Copy of list: ");
output(listCopy);

ArrayList<Character> lc = new ArrayList<Character>();
Collections.addAll(lc, ray);
System.out.println("The addAll method: ");
output(lc);

System.out.println(Collections.frequency(lc, 'n'));

boolean tof = Collections.disjoint(lc, l);
System.out.println(tof);

if(tof)
System.out.println("these list do not have anything in common");
else
System.out.println("these list are have something in common");

//fill Collections with crap
Collections.fill(l, 'X');
System.out.println("After filling the list: ");
output(l);

}

//output method
private static void output(List<Character> thelist ) {
for(int i =0; i<thelist.size();i++)
System.out.printf("%s ", thelist.get(i));
System.out.println();
}

}