File list (Check if you may need any files):
Java
....\Audio
....\.....\Audio.html
....\.....\audio2.class
....\.....\audio2.java
....\.....\bj1.wav
....\.....\bj2.wav
....\Calculate
....\.........\Calculate3.class
....\.........\Calculate3.java
....\.........\Calculate4.class
....\.........\Calculate4.java
....\Editor
....\......\classes
....\......\Editor.jcp
....\......\Editor.jcu
....\......\Editor.jcw
....\......\src
....\......\...\Editor.java
....\......\...\EditorFrame$1.class
....\......\...\EditorFrame.class
....\Leap
....\MyPackage
....\.........\Date1.java
....\.........\MyPackage
....\.........\.........\Date1.class
....\.........\UseDate1.class
....\.........\UseDate1.java
....\Package
....\.......\B2.java
....\.......\C2.java
....\.......\D2.class
....\.......\D2.java
....\.......\MyPackage
....\.......\.........\B2.class
....\.......\.........\MyPackage1
....\.......\.........\..........\C2.class
....\prime
....\.....\Sample.class
....\.....\Sample.html
....\.....\Sample.java
....\roots1.html
....\sum
....\...\classes
....\...\.......\sum.class
....\...\src
....\...\...\sum.class
....\...\...\sum.java
....\...\sum.jcp
....\...\sum.jcu
....\...\sum.jcw
....\三角形面积
....\..........\Triangle.class
....\..........\Triangle.html
....\..........\Triangle002.class
....\..........\Triangle002.java
....\..........\Triangle003.class
....\..........\Triangle003.java
....\..........\Triangle2.class
....\..........\Triangle2.html
....\..........\Triangle2.java
....\..........\Triangle3.html
....\对话框
....\......\Sample.class
....\......\Sample.java
....\整钱兑零
....\........\zqdl.class
....\........\zqdl.java
....\最大公约数
....\..........\gys.class
....\..........\gys.java
....\求和
....\....\classes
....\....\.......\sum.class
....\....\src
....\....\...\sum.class
....\....\...\sum.java
....\....\sum.jcp
....\....\sum.jcu
....\....\sum.jcw
....\求根
....\....\roots.class
....\....\roots.java
....\....\roots1.class
....\....\roots1.html
....\....\roots1.java
....\百鸡百钱
....\........\bjbq.html
....\........\bjbq.jcp
....\........\bjbq.jcu
....\........\bjbq.jcw
....\........\bjbq1.class
....\........\bjbq1.java
....\........\classes
....\........\src
....\........\...\bjbq.class
....\........\...\bjbq.java
....\........\src_bjbq.txt
....\素数
....\....\prime.html