Beginner

jschina

I am a university student in China, I am very interested in ICE. But I am beginner, now I have some trouble with it.
I have installed Ice in C:\Ice-1.5.1, my operation System is WindowXp. I want to use ICE with Java, the JDK is J2sdk1.5.0.
I have set the environment variables as follows,
ICEJ_HOME C:\Ice-1.5.1
CLASSPATH .;%ICEJ_HOME%\lib\Ice.jar
Path %ICEJ_HOME%\bin

The files: Printer.ice, PrinterI.java, Server.java, Client.java are all in the directory Demo, all files are written as the same as ICE manual shows. Then I run commands, the result as follows,

G:\Demo>mkdir G

G:\Demo>slice2java --output-dir G Printer.ice

G:\Demo>javac -d classes -classpath classes:$ICEJ_HOME/lib/Ice.jar\-source 1.4 Server.java PrinterI.java G/*.java
javac: invalid flag: 1.4
Usage: javac <options> <source files>
where possible options include:
-g Generate all debugging info
-g:none Generate no debugging info
-g:{lines,vars,source} Generate only some debugging info
-nowarn Generate no warnings
-verbose Output messages about what the compiler is doing
-deprecation Output source locations where deprecated APIs are used
-classpath <path> Specify where to find user class files
-cp <path> Specify where to find user class files
-sourcepath <path> Specify where to find input source files
-bootclasspath <path> Override location of bootstrap class files
-extdirs <dirs> Override location of installed extensions
-endorseddirs <dirs> Override location of endorsed standards path
-d <directory> Specify where to place generated class files
-encoding <encoding> Specify character encoding used by source files
-source <release> Provide source compatibility with specified release

-target <release> Generate class files for specific VM version
-version Version information
-help Print a synopsis of standard options
-X Print a synopsis of nonstandard options
-J<flag> Pass <flag> directly to the runtime system

What's wrong with it? I always think the environment variables are wrong, is it? Should I need the source IceJ-1.5.1.
Thanks very much!

marc

Remove the backslash from this line:

javac -d classes -classpath classes:$ICEJ_HOME/lib/Ice.jar\-source 1.4 Server.java

It should be:

javac -d classes -classpath classes:$ICEJ_HOME/lib/Ice.jar -source 1.4 Server.java

jschina

Thanks for your reply! I will follow your instruction, and try again.

jschina

It's error again. The information as follows,

G:\Demo>javac -d classes -classpath classes:$ICEJ_HOME/lib/Ice.jar -source 1.4 Server.java
Server.java:4: package Ice does not exist
Ice.Communicator ic = null;
^
Server.java:7: package Ice does not exist
ic = Ice.Util.initialize( args );
^
Server.java:8: package Ice does not exist
Ice.ObjectAdapter adapter
^
Server.java:11: package Ice does not exist
Ice.Object object = new PrinterI();
^
Server.java:11: cannot find symbol
symbol : class PrinterI
location: class Server
Ice.Object object = new PrinterI();
^
Server.java:12: cannot find symbol
symbol : variable Object
location: class Server
adapter.add( Object,
^
Server.java:13: package Ice does not exist
Ice.Util.stringToIdentity( "SimplePrinter" ) );
^
Server.java:17: package Ice does not exist
catch( Ice.LocalException e ) {
^
8 errors

I think it is wrong with environment variables, but I don't know how to correct it .

jschina

The source of Server.java is

public class Server {
public static void main( String[] args ) {
int status = 0;
Ice.Communicator ic = null;

try {
ic = Ice.Util.initialize( args );
Ice.ObjectAdapter adapter = ic.createObjectAdapterWithEndpoints( "SimplePrinterAdapter", "default -p 10000" );
Ice.Object object = new PrinterI();
adapter.add( Object, Ice.Util.stringToIdentity( "SimplePrinter" ) );
adapter.activate();
ic.waitForShutDown();
}
catch( Ice.LocalException e ) {
e.printStackTrace();
status = 1;
}
catch( Exception e ) {
System.err.println( e.getMessage() );
status = 1;
}
finally {
if( ic != null )
ic.destroy();
}

System.exit( status );
}
}

I copy the code from Ice1.3.0 manual, Chinese edition. Is it right?

marc

It appears you are using Windows and cmd.exe, correct? In this case, you cannot use $ICEJ_HOME, but must use %ICEJ_HOME% instead. You must also use ';' as classpath delimiter, not ':'. So the command should be:

javac -d classes -classpath classes;%ICEJ_HOME%/lib/Ice.jar -source 1.4 Server.java

For more information, please consult your javac documentation.

jschina

I am sorry to trouble you severally, but I don't solve the problem. I used your command line, but compilation fails again. The information is as follows,

G:\Demo>javac -d classes -classpath classes;%ICEJ_HOME%/lib/Ice.jar -source 1.4 Server.java
Server.java:11: cannot find symbol
symbol : class PrinterI
location: class Server
Ice.Object object = new PrinterI();
^
Server.java:12: cannot find symbol
symbol : variable Object
location: class Server
adapter.add( Object,
^
Server.java:15: cannot find symbol
symbol : method waitForShutDown()
location: interface Ice.Communicator
ic.waitForShutDown();
^
3 errors

The numbers of error are decreased.
I am using Windows XP, and have set the environment variables as follows,

ICEJ_HOME C:\Ice-1.5.1
CLASSPATH .;%ICEJ_HOME%\lib
Path %ICEJ_HOME%\bin

I am so puzzled, please help me.

mes

Two of the errors above relate to capitalization issues. You need to change

adapter.add( Object, Ice.Util.stringToIdentity( "SimplePrinter" ) );

to

adapter.add( object, Ice.Util.stringToIdentity( "SimplePrinter" ) );

and

ic.waitForShutDown();

to

ic.waitForShutdown();

Regarding the missing PrinterI symbol, make sure that the source file is named PrinterI.java, and not something like printeri.java.

If you're still having trouble, please archive your source files in a ZIP file and attach it for us to look at.

Take care,
- Mark

jschina

The problem is not solved, I sent the source files to you, please have a look and give me more advice, thanks.

jschina

I am still concerned with the environment variables, did I set them correctly? I am using Windows XP, and have set environment variables as follows,

ICEJ_HOME C:\Ice-1.5.1
CLASSPATH .;%ICEJ_HOME%\lib
Path %ICEJ_HOME%\bin

bernard

The CLASSPATH must include the jar files, not the directory with the jar files. For example when you run the demo, you could use:

set CLASSPATH=C:\Ice-1.5.1\lib\Ice.jar;C:\Ice-1.5.1\lib\db.jar;classes

"classes" is a sub-directory in each demo directory where the compiled Java code goes (as individual .class files, not .jar archive).

Cheers,
Bernard

jschina

I uninstalled Ice1.5.1, then installed Ice1.5.1 in a new directory, E:\Ice-1.5.1
My operation system is Windows XP. I have set environment variables as follows,
ICEJ_HOME E:\Ice-1.5.1
Path %ICEJ_HOME%\bin
CLASSPATH .;%ICEJ_HOME%\lib\Ice.jar

I copyed the directory "hello" from E:\Ice-1.5.1\demoj\Ice\, and pasted it into G:\
The below is result

G:\hello>mkdir G
***** at the time, a directory "G" was created in "hello" ******
G:\hello>slice2java --output-dir G Hello.ice
***** at the time, several .java files were created in "G" ******
G:\hello>javac -d classes -classpath classes;%ICEJ_HOME%/lib/Ice.jar -source 1.4 Server.java
Server.java:16: cannot find symbol
symbol : class HelloI
location: class Server
Ice.Object object = new HelloI();
^
1 error

G:\hello>

vsonnathi

Hi,

Try running this command

javac -d classes -classpath classes;%ICEJ_HOME%\lib\Ice.jar -source 1.4 Server.java

Windows path separator is \ and not /.


Thanks,
--Venkat.

jschina

Hi, vsonnathi

I used the command as follows,
javac -classpath %ICEJ_HOME%/lib/Ice.jar -source 1.4 Server.java HelloI.java G/*.java

The compilation successed.