File list (Check if you may need any files):
CH2入门
.......\E2-3
.......\....\MyAppletInclude.html
.......\....\MyJavaExcerciseApplet.class
.......\....\MyJavaExcerciseApplet.java
.......\E2-4
.......\....\MyAppletInclude.html
.......\....\MyJavaExcerciseApplet.class
.......\....\MyJavaExcerciseApplet.java
.......\E2-5
.......\....\AppletLabelOutput.class
.......\....\AppletLabelOutput.java
.......\....\MyAppletInclude.html
.......\E2-6
.......\....\ApplicationInOut.class
.......\....\ApplicationInOut.java