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Java Forum / First Aid / May 2004running a java.class file
When I run a compiled java file from an MS DOS window I always have to type java in front of the program....... how can I get around this..... I'm using JBuilder9 to write and compile my source code.......... >When I run a compiled java file from an MS DOS window I always have to type >java in front of the program....... how can I get around this..... I'm using >JBuilder9 to write and compile my source code.......... see http://mindprod.com/jgloss/associations.html  SignatureCanadian Mind Products, Roedy Green. Coaching, problem solving, economical contract programming. See http://mindprod.com/jgloss/jgloss.html for The Java Glossary. >>When I run a compiled java file from an MS DOS window I always have to type >>java in front of the program....... how can I get around this..... I'm using >>JBuilder9 to write and compile my source code.......... > > see http://mindprod.com/jgloss/associations.html Does this mean that 1.4.2 or 1.5.0 has started accepting a filename in place of a class name, or that Win2K/XP has a way around this limitation? OP: If your system doesn't meet these criteria, see http://groups.google.co.uk/groups?threadm=3cad8490%40212.67.96.135 for a launcher program to do the trick. Stewart. SignatureMy e-mail is valid but not my primary mailbox, aside from its being the unfortunate victim of intensive mail-bombing at the moment. Please keep replies on the 'group where everyone may benefit. >Does this mean that 1.4.2 or 1.5.0 has started accepting a filename in >place of a class name, or that Win2K/XP has a way around this limitation? no. You bundle your program in a jar and set up the association for *.jar to java.exe see http://mindprod.com/jgloss/jar.htm#EXECUTING SignatureCanadian Mind Products, Roedy Green. Coaching, problem solving, economical contract programming. See http://mindprod.com/jgloss/jgloss.html for The Java Glossary. <snip> > no. You bundle your program in a jar and set up the association for > *.jar to java.exe That would add an extra step to the building of any app, which some would consider overkill for one-class tests/samples. And when developing, rejarring for every little change would defeat the object of the exercise. OK, so whether there's any point here would probably depend to some extent on the DE and project structure.... > see http://mindprod.com/jgloss/jar.htm#EXECUTING 404 at the mo. Stewart. SignatureMy e-mail is valid but not my primary mailbox, aside from its being the unfortunate victim of intensive mail-bombing at the moment. Please keep replies on the 'group where everyone may benefit. >> see http://mindprod.com/jgloss/jar.htm#EXECUTING > >404 at the mo. try http://mindprod.com/jgloss/jar.html#EXECUTING or just look up "jar" in the index on nearly every page. SignatureCanadian Mind Products, Roedy Green. Coaching, problem solving, economical contract programming. See http://mindprod.com/jgloss/jgloss.html for The Java Glossary. > When I run a compiled java file from an MS DOS window I always have to type > java in front of the program....... how can I get around this..... I'm using > JBuilder9 to write and compile my source code.......... It doesn't really matter what editor that you are using. Java runs the same way regardless of the editor used, or the platform that it was created on. Java does not run directly on any computer. When you type in java SomeProgram, what you are doing is running a program called the Java Virtual Machine, and telling it to run the program defined in SomeProgram. Someone or something has to start the JVM. One workaround, if you are writing programs with a GUI interface, is to put the program in a Jar file. On Windows and Mac's, Jar files can be run by clicking on the file, just like a native application (assuming that Java is installed on the computer). If your program does not have a GUI, then Jars won't help. <snip> > One workaround, if you are writing programs with a GUI interface, is > to put the program in a Jar file. On Windows and Mac's, Jar files can > be run by clicking on the file, just like a native application > (assuming that Java is installed on the computer). If your program > does not have a GUI, then Jars won't help. Wrong. You can change the association of .jar from javaw to java, just as you can with any file type. Stewart. SignatureMy e-mail is valid but not my primary mailbox, aside from its being the unfortunate victim of intensive mail-bombing at the moment. Please keep replies on the 'group where everyone may benefit. > <snip> > > One workaround, if you are writing programs with a GUI interface, is [quoted text clipped - 5 lines] > Wrong. You can change the association of .jar from javaw to java, just > as you can with any file type. Mea Culpa. I didn't think about that - probably because I've never wanted to do that. My concern with this is that console programs are often "beginner" programs that run very quickly and then end. I wonder if the DOS window will stay open after the program finishes. I don't know if the OP is a newbie or not, but eventually some newbie will read this post. If the DOS window doesn't stay open, then any newbie that tries this will get pretty frustrated. 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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