need help on compatibility problem!

[NeoGeoSNK]

I receive an Exception when excute a jar that compiled from jdk
1.5.0_08:
"do not use gui.GUI.add(), use gui.GUI.getContentPane().add instead" on
jvm 1.4.2_08
However, i don't want to change the source code . Is there sb can
give me some suggestion?
Thanks very much!

 

[Andrew Thompson]

I receive an Exception when excute a jar that compiled from jdk
1.5.0_08:
"do not use gui.GUI.add(), use gui.GUI.getContentPane().add instead" on
jvm 1.4.2_08
However, i don't want to change the source code . Is there sb can
give me some suggestion?

Mark your project as 1.5+?

Andrew T.

 

[NeoGeoSNK]

Mark your project as 1.5+?

Andrew T.

Hello Andrew Thompson,
what does "Mark" mean?

 

[Andrew Thompson]

....
Hello Andrew Thompson,
what does "Mark" mean?

I.E. launch it using webstart, and in the JNLP..

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" codebase="http://.." href="the.jnlp">
<information>
<title>Title</title>
<vendor>Vendor</vendor>
</information>
<resources>
<j2se
href="http://java.sun.com/products/autodl/j2se"
version="1.5+"/>
.....

Andrew T.

 

[NeoGeoSNK]

I.E. launch it using webstart, and in the JNLP..

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" codebase="http://.." href="the.jnlp">
<information>
<title>Title</title>
<vendor>Vendor</vendor>
</information>
<resources>
<j2se
href="http://java.sun.com/products/autodl/j2se"
version="1.5+"/>
....

Andrew T.

Thanks for you greate help
I'll try it

 

[NeoGeoSNK]

I.E. launch it using webstart, and in the JNLP..

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0" codebase="http://.." href="the.jnlp">
<information>
<title>Title</title>
<vendor>Vendor</vendor>
</information>
<resources>
<j2se
href="http://java.sun.com/products/autodl/j2se"
version="1.5+"/>
....

Andrew T.

Hello Andrew T.
the program must access local files, if I launch it using webstart,
should i use JNLP API to accomplish this? so i also need to modify the
original source code? in addition ,how can i config the
"codebase="http://.." if the jnlp file is in current directory? the
only way i know is like: codebase="file:///D:\...", but it's a absolute
path,
^ ^"Thanks.

 

[Andrew Thompson]

...
the program must access local files, if I launch it using webstart,
should i use JNLP API to accomplish this?

A webstart application can access local files at least two ways.
1) unstrusted app. using the JLNP API FileService, but if you do
not want to alter the code, the other option is to ..
2) sign it, and request either all-permissions or
j2ee-client-application-premissions in the JNLP launch file.

..so i also need to modify the
original source code?

Option 1) yes, option 2) no.

..in addition ,how can i config the
"codebase="http://.." if the jnlp file is in current directory? the
only way i know is like: codebase="file:///D:\...", but it's a absolute
path,

A JNLP launch file can be tested this way..
Open a command prompt pointing to the directory of the
JNLP file, then type (something like)..

javaws -codebase file:. file:./thejnlp.jnlp

...that should load the WebStart manager, replacing the
codebase in 'thejnlp.jnlp' with the current directory.

(Note the codebase in the JNLP file can be a complete
lie, the launch file does not need to exist on the net, for
this to work)

HTH

Andrew T.

 

[NeoGeoSNK]

A webstart application can access local files at least two ways.
1) unstrusted app. using the JLNP API FileService, but if you do
not want to alter the code, the other option is to ..
2) sign it, and request either all-permissions or
j2ee-client-application-premissions in the JNLP launch file.


Option 1) yes, option 2) no.


A JNLP launch file can be tested this way..
Open a command prompt pointing to the directory of the
JNLP file, then type (something like)..

javaws -codebase file:. file:./thejnlp.jnlp

..that should load the WebStart manager, replacing the
codebase in 'thejnlp.jnlp' with the current directory.

(Note the codebase in the JNLP file can be a complete
lie, the launch file does not need to exist on the net, for
this to work)

HTH

Andrew T.

Thanks a lot Andrew T
I'll select Option 2). ^ ^ i hope i can accomplish this problem
according to your help.
But I found i realy can't distinguish the "file:", "file:." , and
"file:///" :'(
I write a jnlp test file below and they are all ok
<jnlp codebase="file:." href="file:\c14\jnlp\filechooser.jnlp">
<jnlp codebase="file:" href="file:///D:\c14\jnlp\filechooser.jnlp">
<jnlp codebase="file:." href="file:\filechooser.jnlp">
<jnlp codebase="file:" href="file:\filechooser.jnlp">