public?abstract?class?AbstractTree>
????implements?Tree?{
??@Override?/**?Inorder?traversal?from?the?root*/
??public?void?inorder（）?{
??}

??@Override?/**?Postorder?traversal?from?the?root?*/
??public?void?postorder（）?{
??}

??@Override?/**?Preorder?traversal?from?the?root?*/
??public?void?preorder（）?{
??}

??@Override?/**?Return?true?if?the?tree?is?empty?*/
??public?boolean?isEmpty（）?{
????return?getSize（）?==?0;
??}
//
//??@Override?/**?Return?an?iterator?for?the?tree?*/
//??public?java.util.Iterator?iterator（）?{
//????return?null;
//??}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????379??2016-11-15?07:16??exercise\.classpath

?????文件????????384??2016-04-17?09:25??exercise\.project

?????文件?????????53??2014-11-03?18:12??exercise\.SearchTree

?????文件????????598??2016-04-17?09:25??exercise\.settings\org.eclipse.jdt.core.prefs

?????文件????????832??2017-03-12?12:44??exercise\AbstractTree.class

?????文件????????601??2012-03-05?15:13??exercise\AbstractTree.java

?????文件???????1511??2017-03-12?12:44??exercise\Account.class

?????文件???????2131??2017-03-12?12:44??exercise\Account1.class

?????文件????????366??2015-10-08?14:56??exercise\address.dat

?????文件?????192965??2014-03-20?16:03??exercise\ak.txt

?????文件???????2050??2011-10-11?22:01??exercise\alarmSound.au

?????文件?????140761??2012-05-15?12:54??exercise\AllBabyNamesSortedAllowDuplicates.txt

?????文件??????17865??2012-05-15?12:53??exercise\AllBabyNamesSortedDuplicatesNotAllowed.txt

?????文件???????1136??2017-03-12?12:44??exercise\Animal.class

?????文件????????364??2017-03-12?12:44??exercise\Apple.class

?????文件??????12254??1999-02-26?15:03??exercise\audio\am.au

?????文件???????5598??1999-05-08?14:23??exercise\audio\anthem0.mid

?????文件???????7913??1999-05-08?14:21??exercise\audio\anthem1.mid

?????文件???????8342??1999-05-08?14:21??exercise\audio\anthem2.mid

?????文件???????3737??1999-05-08?14:31??exercise\audio\anthem3.mid

?????文件???????8332??1999-05-08?14:24??exercise\audio\anthem4.mid

?????文件???????5232??1999-05-08?14:22??exercise\audio\anthem5.mid

?????文件??????11000??1999-05-08?14:15??exercise\audio\anthem6.mid

?????文件???????8342??1999-05-08?14:21??exercise\audio\china.mid

?????文件?????482975??2013-03-25?21:54??exercise\audio\china.mp3

?????文件???????5598??1999-05-08?14:23??exercise\audio\denmark.mid

?????文件?????482975??2013-03-25?21:53??exercise\audio\denmark.mp3

?????文件???????7913??1999-05-08?14:21??exercise\audio\germany.mid

?????文件?????482975??2013-03-25?21:53??exercise\audio\germany.mp3

?????文件??????12254??1999-02-26?15:10??exercise\audio\hour0.au

............此處省略4122個文件信息