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I. Introduction
II. A First Program in java: Printing a Line of text
a. A java application is a computer program that executes when you use the java command to launch the java virtual machine JVM.
b. // indicates that the remainder of the line is a comment. Programmers insert comments to document programs and improve their readability. This helps other people read and understand your program. The java compiler ignores comment. By convention we begin every program with a comment indicating the figure number and file name. A comment that begins with //is called and end of line comment, because the comment terminates at the end of the line on which it appears. A //comment also can begin in the middle of a line and continue until the end of that line.
c. Traditional comments can be spread over several lines. This type of comment begins with the delimiter.*, all text between the delimiter is ignored by the complier.
d. Java also provides Javadoc comment that are delimited by /** and */. Javadoc comment delimiters are ignored by the compiler. Javadoc comments enable programmers to embed program documentation directly in their programs. Such comments are the preferred java documenting format in industry. The javadoc utility program reads javadoc comments and uses them to prepare your programs documentation HTML format.
e. Programmers use blank lines and space characters to make programs easier to read. Together, blank lines, space character and tab characters are known as white space.
f. White space is ignored by the compiler.
g. Every programming Java consists of at least on e class declaration that is defined by you –the programmer. These are known s programmer defined classes or user defined classes. The class keyword introduces a class declaration in Java and is immediately followed by the class name. Keywords are reserved for use by java and are always spelled with all lowercase letters.
h. By...