Run a Java program on Windows.

[Norm]

Here's what I have as my jarfile value

That's strange. Do you mean the entry in the shell/open/command leaf?
The jarfile entry itself just has: Default .. Executable Jar File
Does that path look good?

[a_programmer]

This is what I have. Sorry it's a little small.

[Norm]

Is there a javaw.exe file in C:\Program Files\Java\jre6\bin\ folder?

[a_programmer]

Yep. I changed the file association to the java.exe file that's in the same folder as well, but that didn't work so I changed it back to javaw.exe

[Norm]

Did you get a flash on the screen (the command prompt window quickly opening and closing) when you used the java.exe command vs javaw.exe?

Try taking the command line to the command prompt window and see if it will execute there ok.
Replace the %1 with the jarfile filename.

[a_programmer]

Yes I do get a flash on the screen.

Which command do I use? If I type "C:\Program Files\Java\jre6\bin\javaw.exe" -jar "java.jar" %* it will say "Unable to access jarfile java.jar"

java -jar "java.jar" %* runs fine.
java -jar "java.jar" runs fine too.

[Norm]

If I type "C:\Program Files\Java\jre6\bin\javaw.exe" -jar "java.jar" %*
it will say "Unable to access jarfile java.jar"

Did you try it without the "s around the jar filename?
Also try it with the java.exe command vs javaw.exe
Can you copy and paste here the console:
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.



Here is what I get when there jar file does not exist:

D:\Norms\Norms Tools>D:\Java\jre6_20\bin\java.exe -jar asdf.jar
Unable to access jarfile asdf.jar

[a_programmer]

Here's what it shows:

The system cannot find message text for message number 0x2350 in the message fil
e for Application.

Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java -jar calc.java
Unable to access jarfile calc.java

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>"C:\Program Files\Java\jre6\
bin\javaw.exe" -jar "calc.jar" %*

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java -jar "calc.jar" %*
Enter infix expression: h
Error in expression. Invalid character.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java -jar "calc.jar"
Enter infix expression: q
Error in expression. Invalid character.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java -jar calc.jar
Enter infix expression: q
Error in expression. Invalid character.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>"C:\Program Files\Java\jre6\
bin\javaw.exe" -jar "java.jar" %*

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>"C:\Program Files\Java\jre6\
bin\javaw.exe" -jar "java.jar" %*

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>"C:\Program Files\Java\jre6\
bin\javaw.exe" -jar java.jar %*

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java calc.jar
Exception in thread "main" java.lang.NoClassDefFoundError: calc/jar
Caused by: java.lang.ClassNotFoundException: calc.jar
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: calc.jar. Program will exit.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>java -jar calc.jar
Enter infix expression: 1 + x
Converted expression: 1 x +
Enter a value for x: 2
The result is: 3
Enter a value for x: q
Not an integer. Exiting.

C:\Users\Brett\Documents\NetBeansProjects\calc\dis t>

Oh, for the "C:\Program Files\Java\jre6\bin\javaw.exe" -jar "java.jar" %* a dialog box would pop up saying "Unable to access jarfile java.jar". It didn't show up in the command prompt.

[a_programmer]

I searched frantically on Google but still haven't found an answer. But, I found out I can run dialog boxes.

If I run a dialog box program inside Netbeans with a button that does

System.out.println("Hello, world!");

, the message will print where it normally does in the output box at the bottom.

If I double click the .jar file, the dialog box will come up. When I press the same button, there's no where for Windows to output the text.

[Norm]

java -jar calc.jar

This one seems to have worked. On the other command lines you were referencing non existent jar files.
Does the program attempt to read from the console? I don't know what javaw.exe will do in that case.
Also I don't know what java.exe would do???

Are using a console for input???

[Norm]

java -jar calc.jar

This one seems to have worked. On the other command lines you were referencing non existent jar files.
Does the program attempt to read from the console? I don't know what javaw.exe will do in that case.
Also I don't know what java.exe would do???

Are using a console for input???

[fxRichard]

Java in Windows 7 is bit finicky due to the Win 7 32-bit compatibility mode. What happens to most people is they have a 64-bit version of Windows but install a 32-bit version of Java, when doing this it installs Java in the C:\Program Files (x86)\ and when running java from the command line WIndows will not find it by default. I didn't bother reading all of this thread so this may not be your issue but it may help someone.