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which folder I should these jar files to?

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  which folder I should these jar files to? gearss8888@gmail.com - 2012-09-08 00:21 -0700
    Re: which folder I should these jar files to? Joerg Meier <joergmmeier@arcor.de> - 2012-09-08 11:11 +0200
      Re: which folder I should these jar files to? Lew <lewbloch@gmail.com> - 2012-09-08 16:57 -0700
        Re: which folder I should these jar files to? Joerg Meier <joergmmeier@arcor.de> - 2012-09-09 11:54 +0200
    Re: which folder I should these jar files to? Roedy Green <see_website@mindprod.com.invalid> - 2012-09-08 19:51 -0700
    Re: which folder I should these jar files to? markspace <-@.> - 2012-09-08 20:35 -0700

#2080 — which folder I should these jar files to?

I am new in Java, I want to run a Java program, it needs three jars: swt-3.6M3-win32-win32-x86.jar，DJNativeSwing-SWT.jar,DJNativeSwing.jar, I get them, but I donot know which place I should put them into, can someone help me?
best regards,
Liwen
-------------
the following is the import codes:
import chrriis.dj.nativeswing.swtimpl.NativeComponent;
import chrriis.dj.nativeswing.swtimpl.NativeInterface;
import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser;
import chrriis.dj.nativeswing.swtimpl.components.WebBrowserAdapter;
import chrriis.dj.nativeswing.swtimpl.components.WebBrowserEvent;

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#2081

On Sat, 8 Sep 2012 00:21:16 -0700 (PDT), gearss8888@gmail.com wrote:

> I am new in Java, I want to run a Java program, it needs three jars: swt-3.6M3-win32-win32-x86.jar，DJNativeSwing-SWT.jar,DJNativeSwing.jar, I get them, but I donot know which place I should put them into, can someone help me?
> best regards,

If you just want to run a Java program, then in most cases, the library
jar's should go into the same folder as the application jar.

Liebe Gruesse,
		Joerg

-- 
Ich lese meine Emails nicht, replies to Email bleiben also leider
ungelesen.

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#2082

Joerg Meier wrote:
> gearss8888 wrote:
>> I am new in Java, I want to run a Java program, it needs three jars: 
>> swt-3.6M3-win32-win32-x86.jar，DJNativeSwing-SWT.jar,DJNativeSwing.jar, 
>> I get them, but I donot know which place I should put them into, 
>> can someone help me?
> 
> If you just want to run a Java program, then in most cases, the library
> jar's [sic] should go into the same folder as the application jar [sic].

How will that help?

Where the JARs go depends on how you run the program. If you run it with 

 java <options> <class>

then the JARs go wherever you want, provided you specify the 
classpath to include the JARs from that location. For example, to make 
Joerg's suggestion actually work, you'd need something like:

 java -cp ./* com.foo.bar.Main

Without the correct specification of the classpath, Joerg's suggestion 
is useless.

If the program runs with the "-jar" option, then the JARs must go 
in the location specified by the program JAR's manifest, relative 
to the directory of the program JAR. Command-line and environment-
variable classpath specifications are ignored.

This is covered in the Java tutorials, which surely you are studying.

--
Lew

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#2085

On Sat, 8 Sep 2012 16:57:00 -0700 (PDT), Lew wrote:

> Joerg Meier wrote:
>> gearss8888 wrote:
>>> I am new in Java, I want to run a Java program, it needs three jars: 
>>> swt-3.6M3-win32-win32-x86.jar，DJNativeSwing-SWT.jar,DJNativeSwing.jar, 
>>> I get them, but I donot know which place I should put them into, 
>>> can someone help me?
>> If you just want to run a Java program, then in most cases, the library
>> jar's [sic] should go into the same folder as the application jar [sic].
> How will that help?

> Where the JARs go depends on how you run the program. If you run it with 

>  java <options> <class>

Then you have no application jar, and my advice is obviously not tailored
to this situation. I would however question how many applications are
distributed as .class files. That would seem like a rare edge case.

> If the program runs with the "-jar" option, then the JARs must go 
> in the location specified by the program JAR's manifest, relative 
> to the directory of the program JAR. Command-line and environment-
> variable classpath specifications are ignored.

Which, like I said, would most likely be "." for the typical application.

Liebe Gruesse,
		Joerg

-- 
Ich lese meine Emails nicht, replies to Email bleiben also leider
ungelesen.

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#2083

On Sat, 8 Sep 2012 00:21:16 -0700 (PDT), gearss8888@gmail.com wrote,
quoted or indirectly quoted someone who said :

>I am new in Java, I want to run a Java program, it needs three jars: swt-3.=
>6M3-win32-win32-x86.jar=EF=BC=8CDJNativeSwing-SWT.jar,DJNativeSwing.jar, I =
>get them, but I donot know which place I should put them into, can someone =
>help me?
>best regards,

see http://mindprod.com/jgloss/classpath.html You might put them in
the ext directory, or in some other directory, and add the jars (not
the containing directory) to the path.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
A new scientific truth does not triumph by convincing its opponents and making them see the light,
but rather because its opponents eventually die, and a new generation grows up that is familiar with it.
~ Max Planck 1858-04-23 1947-10-04 

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#2084

On 9/8/2012 12:21 AM, gearss8888@gmail.com wrote:
> I am new in Java, I want to run a Java program, it needs three jars:
> swt-3.6M3-win32-win32-x86.jar，DJNativeSwing-
> SWT.jar,DJNativeSwing.jar, I get them, but I donot know which place I
> should put them into, can someone help me?


I usually put Jar files in a common location like:

C:/Users/Me/Development/Libs/swt/swt-3.6M3-win32-win32-x86.jar
C:/Users/Me/Development/Libs/swt/DJNativeSwing.jar
C:/Users/Me/Development/Libs/swt/DJNativeSwing-SWT.jar

Then I set those Jars as libraries in my IDE, or in an ant properties file.

Example:

<project name="MyProject" default="dist" basedir=".">

   <property name="libs" location="C:/Users/Me/Development/Libs/swt/*"/>

   <target name="compile" depends="init" >
     <!-- Compile the java code from ${src} into ${build} -->
     <javac srcdir="src/" destdir="dest/" classpath="${libs} />
   </target>

</project>

(The above wasn't syntax checked or tested.)

Using the classpath environment variable is kind of newbie-ish, and 
using the ext directory is downright dangerous, imo.  Best to learn to 
separate the libraries need for each project.  Trying to copy every 
single Jar file you might need into the ext directory is a sure way to 
have a train wreck at some point.

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