Hello World

1
Hello World
2
Comments
The Java language supports three kinds of
comments / text / The
compiler ignores everything from / to /.
/ documentation / This indicates a
documentation comment (doc comment, for short).
The compiler ignores this kind of comment, just
like it ignores comments that use / and /.
The JDK javadoc tool uses doc comments
when preparing automatically generated
documentation. For more information on javadoc,
see the Java tool documentation. // text
The compiler ignores everything from
// to the end of the line.
3
Applet
4
HTML
ltHTMLgt ltHEADgt ltTITLEgt A Simple Program
lt/TITLEgt lt/HEADgt ltBODYgt Here is the output of my
program ltAPPLET CODE"HelloWorld.class"
WIDTH150 HEIGHT25gt lt/APPLETgt lt/BODYgt lt/HTMLgt
5
UML

• Class Diagram of Hello World Applet