(This exercise assumes your computer contains a Hello.java file like that in Figure 1.6. If not, use a plain text editor to create such a file.) Experiment with the Hello.java program to learn the meanings of typical compilation and runtime error messages:

a) Omit the final / from the header block.

b) Omit any part of the argument in the parentheses after main.

c) Omit the semicolon from the end of the output statement.

d) One at a time, omit the braces, { and }.

e) Try using lowercase, $, _, or a number for the first character in the class name.

f) Make the program filename different from the class name.

g) Change main to Main.

h) One at a time, try omitting public, static, and void from before main.

Figure 1.6

Untitled - Notepad Eile Edit Format View Help public class Hello } public static void main(string[] args) System.out.println("Hello, world!"); } O