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George Toronto

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since Dec 30, 2000
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Recent posts by George Toronto

Hi,
I knew how to modify jdk versions for no-j2ee java projects in WSAD5. but right now i would like to change the jdk and j2ee version for j2ee/web projects, is it a fast and safe way to change versions back and forth cleanly?

I noticed there are several jar files should be replaced with others, but i don't know which one is for which (among different versions) accordingly. Is there a corss reference table?

Thanks,
George
16 years ago
Kyle,
very glad to see your comments. I understand what Jean suggested, but the problem is even the simlest war package e.g. HelloWorld without JSP and EJB stuff can't be delpoyed. Did you try doing deployment this way, that is developing projects in WSAD5 and deploying them on WAD4?

I'll try to make a package manually and see what happens.

Thanks,
George
16 years ago
Jeanne,
Thanks for your reply. Actually, my WSAD5.0 is using jdk1.4. I checked the war package and didn't find some information related to JDK. Even the simplest war can't be deployed. Do you think it is jdk version that caused the problem?

Thanks,
George
16 years ago
Hi,
I exported a war package from WSAD5.0. The war run well under WSAD5.0 test server. but I got errors when deploying the package into websphere 4.0 Application Server4.0 and it says the war or ear isn't a valid war/ear.

Why? Is WSAD5.0 compatible with WAS4.0?

Thanks,
George
16 years ago
Hi Marc and everyone,

I use websphere to build up my struts web apps. I am stucked by the following problem for a while, could you help me out?

the structure is a basice one. login.jsp(LoginForm) ->LoginAction ->forward to ok.jsp. In ok.jsp, I used <bean:message> or <bean:write>, then I got an error :

[Servlet Error]-[JSP 1.2 Processor]: java.lang.IllegalArgumentException: can't access SESSION_SCOPE without an HttpSession

If I kick bean tags off and use jsp statements to see the results, everything is ok. what happened?

Thanks,
George
16 years ago
Nobody knows? Nobody is using or used MySQL as backend database when playing EJBs? I think that should be quite common, right?
17 years ago
Hi, Guru,
I tried to set up mysql datasource in WSAD5, but I can't go thru. What I did is
created a user-defined jdbc provider first.
mysql,
implemnetation class name -> com.mysql.jdbc.jdbc2.optional.MySQLPoolDataSource
classpath -> mysql-jdbc.jar
Then add a new data source
BUT i can't see the provider type I just defined. Who can tell me how I can do for it.
Thanks for your help.
George
17 years ago
Hi,
I knew how to set enviornment varibles with simple data type for example, int,float or other pri. data, but I don't know how to set up a HashTable varible which will contain name/value pair. In weblogic it is easy you just set it and contain those data in the EJB deloyment descriptor file.
How can help do it in WEBSPHERE5.0, thanks.
George
17 years ago
Hi,
Why can't find swing design feature in websphere?
Does websphere studio 4.0 have that feature built in? If it does, where can I find it?
Thanks,
George
17 years ago
HI, friedns
my friend asked me why his class file cannot excute by running java command. I checked his enviornment setup. There are:
PATH = d:\jdk1.2.2\bin
CLASSPATH = d:\jdk1.2.2\lib
He just test the following code

file name is Hello.java
then
javac Hello.java ----> that is ok, Hello.class is created
java Hell.class -----> Not good
eror: Exception in thread of "main", java.lang.NoClassDefFoundError: Hello
His code works well in my machine which has same setup.
Could you tell me why? I am comfused at that becoz I never met this situation before.
Thanks
19 years ago
Hi, there
you know, that e-book doesnot include pictures and diagrams which are very important to explain a constructure. Who know the true e-version which is same as the original book?
thanx

[This message has been edited by George Toronto (edited March 14, 2001).]
Hi, maateen
Do you know others?
Thanx
George
Hi, Friends
How many types of cursor in JDBC? Someone told me but I have no idea about that. Could you give me some threads?
thanks
George
hi,jim
thanx. could you tell me where i can get the specification of EJB and which section your answer is?
other other hand, u know, EJB is based on RMI. RMI can have multithreaded properties, why does it disappare in ejb? Moreover, how is the multithread implemented in RMI? We should set the XXXImpl class extend Runable or Thread, but who manages the threads?
best rgds
george