File list (Check if you may need any files):
calculator
..........\.classpath
..........\.project
..........\bin
..........\...\calculator
..........\...\..........\cal$1.class
..........\...\..........\cal$10.class
..........\...\..........\cal$11.class
..........\...\..........\cal$12.class
..........\...\..........\cal$13.class
..........\...\..........\cal$14.class
..........\...\..........\cal$15.class
..........\...\..........\cal$16.class
..........\...\..........\cal$17.class
..........\...\..........\cal$2.class
..........\...\..........\cal$3.class
..........\...\..........\cal$4.class
..........\...\..........\cal$5.class
..........\...\..........\cal$6.class
..........\...\..........\cal$7.class
..........\...\..........\cal$8.class
..........\...\..........\cal$9.class
..........\...\..........\cal.class
..........\src
..........\...\calculator
..........\...\..........\cal.java