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Java Forum / General / September 2006Beginner's question
import java.awt.Graphics; public class printtest extends java.applet.Applet { public void init() { } public void paint (Graphics g) { g.drawString ("Hello from java!", 60, 30); } public static void main (String args) { } } =============================== java.lang.NoSuchMethodError: main Exception in thread "main" What happened? Thanks Jack > public class printtest extends java.applet.Applet > public static void main (String args) > { That should be: public static void main(String[] args) { > } But it still wont do anything. Applets run in web pages. You'll need something like this in an HTML file (in the same directory as your class file): <applet class="printtest.class" width="100" height="100"></applet> Then either view the web page in your browser (if it has a sufficiently recent version of Java enabled) or use appletviewer. Tom Hawtin  SignatureUnemployed English Java programmer http://jroller.com/page/tackline/ How do you make the paint method work? Thanks Jack "Thomas Hawtin" <usenet@tackline.plus.com> ???????:45118f8b$0$2663$ed2619ec@ptn-nntp-reader02.plus.net... >> public class printtest extends java.applet.Applet > [quoted text clipped - 17 lines] > > Tom Hawtin > How do you make the paint method work? Works for me... My entire (Java 1.5) code: import java.awt.Graphics; public class PrintTest extends java.applet.Applet { @Override public void paint(Graphics g) { g.drawString("Hello from java!", 60, 30); } } <applet code="PrintTest.class" width="100" height="100"></applet> (Note that's code= not class= as I said earlier.) Are you sure it's running? No exception messages in the terminal/console for appletviewer or Java console of your web browser? Tom Hawtin SignatureUnemployed English Java programmer http://jroller.com/page/tackline/ Severity Description Resource In Folder Location Creation Time Id 2 The public type PrintTest must be defined in its own file printtest.java test1 line 3... 1 The serializable class PrintTest does not declare a static final serialVersionUID field of type long printtest.java test1 line 3... "Thomas Hawtin" <usenet@tackline.plus.com> ???????:45119539$0$559$ed2619ec@ptn-nntp-reader03.plus.net... >> How do you make the paint method work? > [quoted text clipped - 17 lines] > > Tom Hawtin > > public class printtest extends java.applet.Applet .... > public static void main(String[] args) { ... > But it still wont do anything. Sure it will*. Adding a main allows you to run your applet as either an applet or an application. Most of my applets have mains (even if I never intend to use them as applications) simply because it can be so much quicker developing something you can simply launch from the command line. * So long as the main creates a frame, instantiates the applet class, calls init() and adds it to the frame. Andrew T. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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