Show the output of the following program: import ch06.lists.*; public class List

Question

Show the output of the following program:

import ch06.lists.*;

public class ListExer2

{

public static void main (String[ ] args )

{

List Interface list1 = new RefUnsortedList ( ) ; list1.add ( " apple " ) ; list1.add ( " peach" ) ; list1.add ( " orange " ) ; list1.add ( " pear " ) ; list1.remove ( " peach" ) ;

List Interface list2 = new RefSortedList ( ) ; list2.add ( " apple " ) ; list2.add ( " peach" ) ; list2.add ( " orange " ) ; list2.add ( " pear " ) ; list2.remove ( " peach " ) ;

System.out.print ( "Unsorted " ) ;

System.out.println (list1) ;

System.out.print ( " Sorted " ) ;

System.out.println (list2) ;

}

}

Explanation / Answer

import ch06.lists.*;

public class ListExer2

{

public static void main (String[ ] args )

{

List Interface list1 = new RefUnsortedList ( ) ; list1.add ( " apple " ) ; list1.add ( " peach" ) ; list1.add ( " orange " ) ; list1.add ( " pear " ) ; list1.remove ( " peach" ) ;

List Interface list2 = new RefSortedList ( ) ; list2.add ( " apple " ) ; list2.add ( " peach" ) ; list2.add ( " orange " ) ; list2.add ( " pear " ) ; list2.remove ( " peach " ) ;

System.out.print ( "Unsorted " ) ;

System.out.println (list1) ;

System.out.print ( " Sorted " ) ;

System.out.println (list2) ;

}

}

Output:

apple

orange

pear

apple

orange

pear

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