Running a java code

I am new to java.
I have a program to write java source codes. however i do not know how to run or test the code after i have created it.
also the programs i have been trying to use keep asking for JDK file, wot does that mean
Thanx

Check the java tutorial:
http://java.sun.com/docs/books/tutorial/
I don't know what editor you use, but if it is able to compile java code, it probably needs to know where it has been installed.

Similar Messages

Error while running compiled java code

Hi
I have an evaluation license of the JDeveloper2.0 installed on my WindowsNT 4.0 workstation.
I seem to have a problem running my compiled jave code. After compiling the source code(.java file) when I try to run the same I get a message saying
"<FileName> not found in outpath classpath or sourcepath ".
What does this mean and how can I rectify it?
Regards
Sree
null

Your classpath tells Java run time where to look for the class files it needs. In JDeveloper the class path is set in your project properties. Select Project->Properties and check that the source and output paths correspond to your myprojects and myclasses directories.

Running the Java Code from Batch File

Hi All,
I have run a code sucessfully in Eclipse and it uses Logging API from Java
When i try running the same program from batch file it throws error
java.io.IOException: Couldn't get lock for log\Properties_Log_16Sep2009_150229
at java.util.logging.FileHandler.openFiles(Unknown Source)
at java.util.logging.FileHandler.<init>(Unknown Source)
at com.adidas.SPM.LogMessage.<init>(LogMessage.java:26)
at com.adidas.SPM.MainApplication.initialize(MainApplication.java:51)
at com.adidas.SPM.MainApplication.main(MainApplication.java:102)
I am working on a windows systems the folder log has all the permission i have provided with all
Not sure why the code runs like this
The batch file is like below
set CURR_DIR=%CD%
cd %CURR_DIR%\bin
%CURR_DIR%\jre6\bin\java -classpath .;%CURR_DIR%\lib\FirstProject.jar com.test.MainApplication
echo %ERRORLEVEL% The Error Level
echo SUCCESS
GOTO END
:END
pause
Rgds
Aditya

Vikash.SunJava wrote:
According to me the problem is that there are many instances trying to access the same property file. Nothing wrong with that since they only are reading it.
The best way to do is that create a schedular in Windows that runs at some predefined interval (say 1 minute).Huh?
>
What will happen is if your program runs for more than a minute even then the new process will not start until old process is autaomatically killed. Please do not check this option if you want the program to exit normally.
If the Task is still running stop at this time
O_o

How to determine if the server is in debug mode or Running in Java Code

Hi ,
I have a WebDynpro Applcation in which i have to display foll things in Table:
Engine Name; Engine Version: Debug Mode; Reserved by;
Now i could display list of servers but i have hardcoded the Debug Mode as "Disabled"
My Question is:
If i know the Server, can we find if the server is in debugmode in application code???
I have OS access to my Engine. Pls let me in which property file can i find Debug Status??
Also i am not sure if i have posted the Query in RIght Component. DO let e know if this Q is posted in wrong Forum
Kindly help me solve this problem
Thanks n Regards,
Archana

Hi Archana,
If u can't start the server in debugging mode thru NWDS then u can try this
Config Tool:
U can enable the debuggine mode from the Config Tool as well. Just browse to following
C:usrsap<SID>JC<SYS_NO>j2eeconfigtoolconfigtool.bat
Click on the your instance. Then under the tab VM Environment, Set the DebugMode = true.
Restart the engine now. This will open the J2EE server again in the Debug Mode.
Please check the [Debugging Portal Applications or WebDynpro Applciation|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/907751e5-f717-2a10-f3b4-de4431d4722d?quicklink=index&overridelayout=true] and search for SDN
Just hope this helps you!
Regards
Vijay

Java code running as background process in Linux causes high CPU util.

I'm running a piece of java code as a background process in Redhat 7.1 . When I specify to run it as a background process (using the '&') at the command line, I get CPU utilization at around 5% and it dips.
When I edit the script that runs the java code to specify running it as a background process withint the script itself (java ..... &) and then go to the command line and run the script, the CPU utilization shoots up to 95% and stays at the low 90's - very high 80's range for the CPU utilization..
I'm hoping someone has any idea for this behavior and a way to fix it.
Thanks in advance,
Sarat..

This is an interesting post and i'm sory i don't have time to
experament before i answer
you could of course run the script as background
*.sh &
but that's probubly not what you want
I think the solution lies in giving the
proccess a job number %n
then setting it %n &
it might even work to
put something like %java &
Anyway when it's running fullout
it is because it is in the
current terminal process group PID.
wish i could help more

JVM 1.4 seg faults with pure java code?

Has anybody else seen JVM 1.4 seg fault when running pure java code? This seems like it shouldn't be possible, but I get the following at indeterminate times. Unfortunately, it is difficult to isolate since decreasing the size of the program avoids the problem. When the seg fault happens, the size in memory is ~1GB and there is plenty of real and virtual memory to spare.
Unexpected Signal : 11 occurred at PC=0xDE88BC8E
Function=[Unknown. Nearest: +0x100E]
Library=/usr/j2se/jre/lib/i386/server/libjvm.so
Dynamic libraries:
0x8050000 java
0xdfb60000 /usr/lib/libthread.so.1
0xdfba0000 /usr/lib/libdl.so.1
0xdfab0000 /usr/lib/libc.so.1
0xde800000 /usr/j2se/jre/lib/i386/server/libjvm.so
0xdfa40000 /usr/lib/libCrun.so.1
0xdfa20000 /usr/lib/libsocket.so.1
0xdf980000 /usr/lib/libnsl.so.1
0xdf960000 /usr/lib/libm.so.1
0xdfa70000 /usr/lib/libw.so.1
0xdf920000 /usr/lib/libmp.so.2
0xdf8f0000 /usr/j2se/jre/lib/i386/native_threads/libhpi
.so
0xdf8c0000 /usr/j2se/jre/lib/i386/libverify.so
0xdf880000 /usr/j2se/jre/lib/i386/libjava.so
0xdf860000 /usr/j2se/jre/lib/i386/libzip.so
0xda890000 /usr/lib/nss_files.so.1
Local Time = Tue May 14 16:03:38 2002
Elapsed Time = 72
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002D3
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
# Java VM: Java HotSpot(TM) Server VM (1.4.0-rc-b91 mixed
mode)
# An error report file has been saved as hs_err_pid945.log.
# Please refer to the file for further information.

Hi sevenM,
Did you figure out a workaround for this problem?. Did you get it solved with the SUN people?. Is it a known bug?.
I've got exactly the same problem on the same function and VM library.
Any info on this is very much welcome.
Thx
Krithiga
I get the same error sometimes with tomcat-4.0.4 on a
Slackware 8.0.0 and JDK 1.4.0. I don't user any JSPs,
only servlets and the business calls a remote SLSB on
a remote JBOSS server and afterwards select some data
form a remote DB2 7.1 over JDBC.
Here is the log:
Unexpected Signal : 11 occurred at PC=0x40267D98
Function=copy_to_survivor_space__16DefNewGenerationP7oo
DescPP7oopDesc+0x28
Library=/usr/local/j2sdk1.4.0/jre/lib/i386/client/libjv
.so
Current Java thread:
at
at java.net.PlainSocketImpl.socketAccept(Native
tive Method)
at
at
at
t
java.net.PlainSocketImpl.accept(PlainSocketImpl.java:34
- locked <0x44ed3400> (a
400> (a java.net.PlainSocketImpl)
at
at
at
t
java.net.ServerSocket.implAccept(ServerSocket.java:438)
at
at
at
t java.net.ServerSocket.accept(ServerSocket.java:409)
at
at
at
t
org.apache.catalina.core.StandardServer.await(StandardS
rver.java:293)
at
at
at
t
org.apache.catalina.startup.Catalina.start(Catalina.jav
:794)
at
at
at
t
org.apache.catalina.startup.Catalina.execute(Catalina.j
va:681)
at
at
at
t
org.apache.catalina.startup.Catalina.process(Catalina.j
va:179)
at
at
at
t sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
at
at
t
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMetho
AccessorImpl.java:39)
at
at
at
t
sun.reflect.DelegatingMethodAccessorImpl.invoke(Delegat
ngMethodAccessorImpl.java:25)
at
at
at java.lang.reflect.Method.invoke(Method.java:324)
at
at
at
t
org.apache.catalina.startup.Bootstrap.main(Bootstrap.ja
a:243)
Dynamic libraries:
08048000-0804d000 r-xp 00000000 03:03 757599
/usr/local/j2sdk1.4.0/bin/java
0804d000-0804e000 rw-p 00004000 03:03 757599
/usr/local/j2sdk1.4.0/bin/java
40000000-40015000 r-xp 00000000 03:03 885142
/lib/ld-2.2.3.so
40015000-40016000 rw-p 00014000 03:03 885142
/lib/ld-2.2.3.so
40017000-40020000 r-xp 00000000 03:03 69536
/usr/local/j2sdk1.4.0/jre/lib/i386/native_threads/libh
i.so
40020000-40021000 rw-p 00008000 03:03 69536
/usr/local/j2sdk1.4.0/jre/lib/i386/native_threads/libh
i.so
40021000-40022000 r--p 00000000 03:03 33106
/usr/lib/locale/en_US/LC_IDENTIFICATION
40022000-40030000 r-xp 00000000 03:03 885133
/lib/libpthread-0.9.so
40030000-40038000 rw-p 0000d000 03:03 885133
/lib/libpthread-0.9.so
40038000-4003b000 r-xp 00000000 03:03 885149
/lib/libdl-2.2.3.so
4003b000-4003c000 rw-p 00002000 03:03 885149
/lib/libdl-2.2.3.so
4003c000-40143000 r-xp 00000000 03:03 885147
/lib/libc-2.2.3.so
40143000-40149000 rw-p 00106000 03:03 885147
/lib/libc-2.2.3.so
4014d000-40410000 r-xp 00000000 03:03 1150891
/usr/local/j2sdk1.4.0/jre/lib/i386/client/libjvm.so
40410000-40558000 rw-p 002c2000 03:03 1150891
/usr/local/j2sdk1.4.0/jre/lib/i386/client/libjvm.so
4056c000-4057d000 r-xp 00000000 03:03 885152
/lib/libnsl-2.2.3.so
4057d000-4057f000 rw-p 00010000 03:03 885152
/lib/libnsl-2.2.3.so
40581000-405b5000 r-xp 00000000 03:03 950285
/usr/i386-slackware-linux/lib/libstdc++-2-libc6.1-1-2.
.0.so
405b5000-405c1000 rw-p 00033000 03:03 950285
/usr/i386-slackware-linux/lib/libstdc++-2-libc6.1-1-2.
.0.so
405c3000-405e4000 r-xp 00000000 03:03 885138
/lib/libm-2.2.3.so
405e4000-405e5000 rw-p 00020000 03:03 885138
/lib/libm-2.2.3.so
405e5000-405f6000 r-xp 00000000 03:03 69542
/usr/local/j2sdk1.4.0/jre/lib/i386/libverify.so
405f6000-405f8000 rw-p 00010000 03:03 69542
/usr/local/j2sdk1.4.0/jre/lib/i386/libverify.so
405f8000-40619000 r-xp 00000000 03:03 69543
/usr/local/j2sdk1.4.0/jre/lib/i386/libjava.so
40619000-4061b000 rw-p 00020000 03:03 69543
/usr/local/j2sdk1.4.0/jre/lib/i386/libjava.so
4061c000-40630000 r-xp 00000000 03:03 69545
/usr/local/j2sdk1.4.0/jre/lib/i386/libzip.so
40630000-40633000 rw-p 00013000 03:03 69545
/usr/local/j2sdk1.4.0/jre/lib/i386/libzip.so
40633000-4063a000 r--s 00000000 03:03 890455
/usr/local/jakarta-tomcat-4.0.4/bin/bootstrap.jar
4063a000-40641000 r--s 00000000 03:03 890436
/usr/local/jakarta-tomcat-4.0.4/common/lib/naming-comm
n.jar
40641000-40655000 r--s 00000000 03:03 890437
/usr/local/jakarta-tomcat-4.0.4/common/lib/servlet.jar
40655000-4065e000 r--s 00000000 03:03 890438
/usr/local/jakarta-tomcat-4.0.4/common/lib/naming-reso
rces.jar
4065e000-40660000 r--s 00000000 03:03 890439
/usr/local/jakarta-tomcat-4.0.4/common/lib/jdbc2_0-std
xt.jar
40660000-4066c000 r--s 00000000 03:03 890440
/usr/local/jakarta-tomcat-4.0.4/common/lib/activation.
ar
4066c000-4066f000 r--s 00000000 03:03 890441
/usr/local/jakarta-tomcat-4.0.4/common/lib/jta-spec1_0
1.jar
4066f000-4082a000 r--s 00000000 03:03 890443
/usr/local/jakarta-tomcat-4.0.4/common/lib/xerces.jar
4082a000-40874000 r--s 00000000 03:03 890444
/usr/local/jakarta-tomcat-4.0.4/common/lib/tyrex-0.9.7
0.jar
40874000-408b9000 r--s 00000000 03:03 890445
/usr/local/jakarta-tomcat-4.0.4/common/lib/mail.jar
408b9000-408d2000 r--s 00000000 03:03 890446
/usr/local/jakarta-tomcat-4.0.4/common/lib/jndi.jar
408d2000-40958000 r--s 00000000 03:03 890482
/usr/local/jakarta-tomcat-4.0.4/common/lib/db2java.jar
40958000-4096e000 r--s 00000000 03:03 890483
/usr/local/jakarta-tomcat-4.0.4/common/lib/jboss-clien
.jar
4096e000-4097c000 r--s 00000000 03:03 890484
/usr/local/jakarta-tomcat-4.0.4/common/lib/jboss-j2ee.
ar
4097c000-40996000 r--s 00000000 03:03 890485
/usr/local/jakarta-tomcat-4.0.4/common/lib/jaas.jar
40996000-409a0000 r--s 00000000 03:03 890486
/usr/local/jakarta-tomcat-4.0.4/common/lib/jbosssx-cli
nt.jar
409a0000-409a6000 r--s 00000000 03:03 890487
/usr/local/jakarta-tomcat-4.0.4/common/lib/jnp-client.
ar
409a6000-40d10000 r--s 00000000 03:03 890488
/usr/local/jakarta-tomcat-4.0.4/common/lib/jt400_3.0.j
r
40d10000-40d37000 r--s 00000000 03:03 890489
/usr/local/jakarta-tomcat-4.0.4/common/lib/log4j.jar
40d37000-423af000 r--s 00000000 03:03 69634
/usr/local/j2sdk1.4.0/jre/lib/rt.jar
423f1000-42408000 r--s 00000000 03:03 69566
/usr/local/j2sdk1.4.0/jre/lib/sunrsasign.jar
42408000-42476000 r--s 00000000 03:03 69568
/usr/local/j2sdk1.4.0/jre/lib/jsse.jar
42476000-42489000 r--s 00000000 03:03 69567
/usr/local/j2sdk1.4.0/jre/lib/jce.jar
42489000-4270a000 r--s 00000000 03:03 69632
/usr/local/j2sdk1.4.0/jre/lib/charsets.jar
447b2000-447b3000 r--p 00000000 03:03 33104
/usr/lib/locale/en_US/LC_MEASUREMENT
447b3000-447b4000 r--p 00000000 03:03 33102
/usr/lib/locale/en_US/LC_TELEPHONE
447b4000-447b5000 r--p 00000000 03:03 33103
/usr/lib/locale/en_US/LC_ADDRESS
447b5000-447b6000 r--p 00000000 03:03 33100
/usr/lib/locale/en_US/LC_NAME
447b6000-447b7000 r--p 00000000 03:03 33109
/usr/lib/locale/en_US/LC_PAPER
447b7000-447b8000 r--p 00000000 03:03 459106
/usr/lib/locale/en_US/LC_MESSAGES/SYS_LC_MESSAGES
447b8000-447b9000 r--p 00000000 03:03 33110
/usr/lib/locale/en_US/LC_MONETARY
447b9000-447bf000 r--p 00000000 03:03 33107
/usr/lib/locale/en_US/LC_COLLATE
447bf000-447c0000 r--p 00000000 03:03 33101
/usr/lib/locale/en_US/LC_TIME
4c840000-4c841000 r--p 00000000 03:03 33105
/usr/lib/locale/en_US/LC_NUMERIC
4c841000-4c85c000 r--p 00000000 03:03 33108
/usr/lib/locale/en_US/LC_CTYPE
4c85c000-4c85e000 r--s 00000000 03:03 36766
/usr/local/j2sdk1.4.0/jre/lib/ext/dnsns.jar
4c85e000-4c866000 r--s 00000000 03:03 890421
/usr/local/jakarta-tomcat-4.0.4/server/lib/jakarta-reg
xp-1.2.jar
4c866000-4c867000 r--s 00000000 03:03 890422
/usr/local/jakarta-tomcat-4.0.4/server/lib/servlets-co
mon.jar
4c867000-4c871000 r-xp 00000000 03:03 885148
/lib/libnss_compat-2.2.3.so
4c871000-4c873000 rw-p 00009000 03:03 885148
/lib/libnss_compat-2.2.3.so
4c89e000-4c8bb000 r--s 00000000 03:03 36765
/usr/local/j2sdk1.4.0/jre/lib/ext/sunjce_provider.jar
4c8bb000-4c95e000 r--s 00000000 03:03 36767
/usr/local/j2sdk1.4.0/jre/lib/ext/localedata.jar
4c95e000-4c96c000 r--s 00000000 03:03 36768
/usr/local/j2sdk1.4.0/jre/lib/ext/ldapsec.jar
4c96c000-4ce06000 r--s 00000000 03:03 298906
/usr/local/j2sdk1.4.0/lib/tools.jar
4ce06000-4ce0c000 r--s 00000000 03:03 890423
/usr/local/jakarta-tomcat-4.0.4/server/lib/commons-log
ing.jar
4ce0c000-4ce0e000 r--s 00000000 03:03 890424
/usr/local/jakarta-tomcat-4.0.4/server/lib/servlets-in
oker.jar
4ce0e000-4ce11000 r--s 00000000 03:03 890425
/usr/local/jakarta-tomcat-4.0.4/server/lib/servlets-ma
ager.jar
4ce11000-4ce19000 r--s 00000000 03:03 890426
/usr/local/jakarta-tomcat-4.0.4/server/lib/warp.jar
4ce19000-4ceab000 r--s 00000000 03:03 890427
/usr/local/jakarta-tomcat-4.0.4/server/lib/catalina.ja
4ceab000-4ceb4000 r--s 00000000 03:03 890428
/usr/local/jakarta-tomcat-4.0.4/server/lib/tomcat-http
1.jar
4ceb4000-4ceb9000 r--s 00000000 03:03 890429
/usr/local/jakarta-tomcat-4.0.4/server/lib/servlets-de
ault.jar
4ceb9000-4cec9000 r--s 00000000 03:03 890430
/usr/local/jakarta-tomcat-4.0.4/server/lib/tomcat-ajp.
ar
4cec9000-4ceed000 r--s 00000000 03:03 890431
/usr/local/jakarta-tomcat-4.0.4/server/lib/tomcat-util
jar
4ceed000-4cefb000 r--s 00000000 03:03 890432
/usr/local/jakarta-tomcat-4.0.4/server/lib/tomcat-coyo
e.jar
4cefb000-4cf01000 r--s 00000000 03:03 890434
/usr/local/jakarta-tomcat-4.0.4/server/lib/servlets-we
dav.jar
4cf01000-4cf13000 r-xp 00000000 03:03 69548
/usr/local/j2sdk1.4.0/jre/lib/i386/libnet.so
4cf13000-4cf14000 rw-p 00011000 03:03 69548
/usr/local/j2sdk1.4.0/jre/lib/i386/libnet.so
4cf14000-4cf25000 r--s 00000000 03:03 890458
/usr/local/jakarta-tomcat-4.0.4/lib/jasper-runtime.jar
4cf25000-4cf59000 r--s 00000000 03:03 890459
/usr/local/jakarta-tomcat-4.0.4/lib/jasper-compiler.ja
4cf59000-4cf5e000 r--s 00000000 03:03 890460
/usr/local/jakarta-tomcat-4.0.4/lib/naming-factory.jar
4cf5e000-4cf5f000 r--s 00000000 03:03 789670
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46958.tm
(deleted)
4cf5f000-4cf60000 r--s 00000000 03:03 789673
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46959.tm
(deleted)
4cf60000-4cf63000 r--s 00000000 03:03 430785
/usr/local/jakarta-tomcat-4.0.4/webapps/reporter/WEB-I
F/lib/arenajobs.jar
4cf63000-4d067000 r--s 00000000 03:03 430786
/usr/local/jakarta-tomcat-4.0.4/webapps/reporter/WEB-I
F/lib/arenatrading.jar
4d067000-4d08c000 r--s 00000000 03:03 430787
/usr/local/jakarta-tomcat-4.0.4/webapps/reporter/WEB-I
F/lib/quartz.jar
4d08c000-4d08e000 r--s 00000000 03:03 430788
/usr/local/jakarta-tomcat-4.0.4/webapps/reporter/WEB-I
F/lib/scheduler.jar
4d08e000-4d091000 r--s 00000000 03:03 790391
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46960.tm
(deleted)
4d091000-4d195000 r--s 00000000 03:03 790392
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46961.tm
(deleted)
4d195000-4d1ba000 r--s 00000000 03:03 790394
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46962.tm
(deleted)
4d1ba000-4d1bc000 r--s 00000000 03:03 790395
/usr/local/jakarta-tomcat-4.0.4/temp/jar_cache46963.tm
(deleted)
4d1bc000-4d1bd000 r-xp 00000000 03:03 69559
/usr/local/j2sdk1.4.0/jre/lib/i386/librmi.so
4d1bd000-4d1be000 rw-p 00000000 03:03 69559
/usr/local/j2sdk1.4.0/jre/lib/i386/librmi.so
4d1be000-4d1c2000 r-xp 00000000 03:03 69558
/usr/local/j2sdk1.4.0/jre/lib/i386/libioser12.so
4d1c2000-4d1c3000 rw-p 00003000 03:03 69558
/usr/local/j2sdk1.4.0/jre/lib/i386/libioser12.so
4d1c9000-4d1d2000 r-xp 00000000 03:03 885155
/lib/libnss_files-2.2.3.so
4d1d2000-4d1d3000 rw-p 00008000 03:03 885155
/lib/libnss_files-2.2.3.so
Local Time = Tue Oct 8 18:57:29 2002
Elapsed Time = 32640
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002D3
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
# Java VM: Java HotSpot(TM) Client VM (1.4.0-b92 mixed
mode)
# An error report file has been saved as
hs_err_pid26505.log.
# Please refer to the file for further information.

How to compile connection pool sample java code

I recently bought David Knox's "Effective Oracle Database 10g Security by Design", and have been working through his examples with client identifiers and how to leverage database security with anonymous connection pools.
The database side of things I totally understand and have set up, but I now want to compile/run the java code examples, but don't know what is required to compile this.
I'm running Oracle 10.2.0.4 (64-bit) Enterprise Edition on a Linux (RHEL 5) PC. Java version is 1.6.0_20. Relevant .bash_profile environment variables are as follows:
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/jre:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/OPatch:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin
When I try to compile, I get:
oracle:DB10204$ java FastConnect.java
Exception in thread "main" java.lang.NoClassDefFoundError: FastConnect/java
Caused by: java.lang.ClassNotFoundException: FastConnect.java
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: FastConnect.java. Program will exit.
The java source code of one of the examples is below. Is someone able to point me in the right direction as to how I get this to compile? Do I just have a syntax and/or environment configuration modification to do, or is there more to it than that to get this example working? Any help much appreciated.
oracle:DB10204$   cat FastConnect.java
package OSBD;
import java.sql.*;
import oracle.jdbc.pool.OracleDataSource;
public class FastConnect
public static void main(String[] args)
    long connectTime=0, connectionStart=0, connectionStop=0;
    long connectTime2=0, connectionStart2=0, connectionStop2=0;
    ConnMgr cm = new ConnMgr();
    // time first connection. This connection initializes pool.
    connectionStart = System.currentTimeMillis();
    Connection conn = cm.getConnection("SCOTT");
    connectionStop = System.currentTimeMillis();
    String query = "select ename, job, sal from person_view";
    try {
      // show security by querying from View
      Statement stmt = conn.createStatement();
      ResultSet rset = stmt.executeQuery(query);
      while (rset.next()) {
        System.out.println("Name:   " + rset.getString(1));
        System.out.println("Job:    " + rset.getString(2));
        System.out.println("Salary: " + rset.getString(3));
      stmt.close();
      rset.close();
      // close the connection which resets the database session
      cm.closeConnection(conn);
      // time subsequent connection as different user
      connectionStart2 = System.currentTimeMillis();
      conn = cm.getConnection("KING");
      connectionStop2 = System.currentTimeMillis();
      // ensure database can distinguish this new user
      stmt = conn.createStatement();
      rset = stmt.executeQuery(query);
      while (rset.next()) {
        System.out.println("Name:   " + rset.getString(1));
        System.out.println("Job:    " + rset.getString(2));
        System.out.println("Salary: " + rset.getString(3));
      stmt.close();
      rset.close();
      cm.closeConnection(conn);
    } catch (Exception e)    { System.out.println(e.toString()); }
    // print timing results
    connectTime = (connectionStop - connectionStart);
    System.out.println("Connection time for Pool: " + connectTime + " ms.");
    connectTime2 = (connectionStop2 - connectionStart2);
    System.out.println("Subsequent connection time: " +
                        connectTime2 + " ms.");
}Code download is at: http://www.mhprofessional.com/getpage.php?c=oraclepress_downloads.php&cat=4222
I'm looking at Chapter 6.

stuartu wrote:
When I try to compile, I get:
oracle:DB10204$ java FastConnect.java
Exception in thread "main" java.lang.NoClassDefFoundError: FastConnect/java
Caused by: java.lang.ClassNotFoundException: FastConnect.java
I will try to explain what is happening here.
You are launching java telling it to run a class named 'java' in a package named 'FastConnect'
and java says it cannot find that class.
What you intended to do:
$ # make the directory structure match the package structure
$ mkdir OSBD
$ # move the source file in the directory structure so it matches the package structure
$ mv FastConnect.java OSBD/
$ # compile OSBD/FastConnect.java to OSBD/FastConnect.class
$ javac OSBD/FastConnect.java
$ # launch java using the OSBD/FastConnect class
$ java -cp . OSBD.FastConnectNote that the package 'OSBD' does not follow the recommended naming conventions
you might consider changing that to 'osbd'.

Problem with executing shell script on linux through java code.

i am facing problem to kill jboss process on linux that is my application requirement. for that i created one shell script that will get all the process for jboss instance and kill them when i am running that script from command prompt on linux its working perfectly.
The command i am using ---
/opt/RW9/jboss/v4.0.5.GA/bin/restartjboss.sh.
but when i am running through java code its not working.
the java code i am using is:-
pp = Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c", "/opt/RW9/jboss/v4.0.5.GA/bin/restartjboss.sh"});
could anyone tell me what is the problem ?
Edited by: akm198110 on Sep 2, 2008 9:24 AM

I got the problem after long struggle ,after doing proper path i am able to execute the shell script..

How to get repository connection in java code

Hi!
I have a method in server-side java code. This is get a repository connection from Weblogic pool.
private DataSource getDataSource() throws WavesetException {
DataStore ds = Server.getServer().getRepository().getPrimaryDataStore();
DataSource dataSource = null;
if (ds instanceof RelationalDataStore) {
dataSource = ((RelationalDataStore)ds).getDataSource();
return dataSource;
I would like same this, but in the client side. After connection (SessionFactory.getSession...) I get a RemoteSession object.
How can I get a database (repository) connection?
Thanks,
Attila

com.waveset.util.Util.setWavesetHome("D:\\Tomcat 5.0\\webapps\\idm"); // if you are running this java code out side idm app
Session session = SessionFactory.getSession("configurator", new EncryptedData("configurator"));
LighthouseContext lh = session;
WSUser user = (WSUser) lh.getObject(Type.USER, "Testuser");
OR use below code
System.setProperty("waveset.home","D:\\Tomcat 5.0\\webapps\\idm");
// here we find the path
LighthouseContext lighthouseContext = new com.waveset.server.InternalSession();
WSUser user = (WSUser) lighthouseContext.getObject(Type.USER, "Testuser");

OpenScript/How to add .jar file to Java Code in relative path

Hi all,
I want to add a .jar file which can be executed separately (like "java -jar A.jar") to my recorded Java Code.I've read this wiki http://everest2.us.oracle.com/wiki/Generic_JAR_Project about how to add a .jar file to "Assets", however, I cannot figure out how to use the .jarr file in Java code,I mean , how to get this .jar file like the method the databank added in "Assets"?
Things I did are as followed:
1.Execute my .jar file in OpenScript Java code with absolute path like this:
String cmd = "C:\Users\A.jar";
Runtime.getRuntime().exec(cmd);
This does work, but must set a absolute path in Java code like "C:\User\A.jar" ,which is not the workaround I want (I need my scripts can be run on other machines).
2.Try to get its current path with following codes:
File directory = new File(".");
String currentPath=directory.getCanonicalPath();
However,though this can get its absolute path (which is the the project path) in Eclipse like "C:\Users\Workspace\testProject", this only gets "C:\OracleATS\openScript" in OpenScript.
I thought to copy my .jar file to the project path , got its current path in java code first,then can know the path of .jar file, but this workaround failed because of the above reason.
I notice that in the "Assets" there are "Databanks","Object Libraries","JAR Files","Scripts". Since the databanks and scripts that added to "Databanks" and "Scripts" can be got or run in Java Code like:
*getDatabank("DatabankName").getNextDatabankRecord(); String data = eval("{{db.DatabankName.data}}");*
*or getScript("ScriptName").run();*
*Is there a method to get and run the jar file added to "Assets\JAR Files" like the above?*
Thank you very much!
Regards,
Angyoung

Hi DM,
Thanks for your reply!
I've found a workaround,which is calling OpenScript's APIs ,such as this.getScriptPackage().getRepository() and this.getScriptPackage().getWorkspace(),etc to locate the .jar file.
And this workaround can still work even though the script is run on other machine.
Sorry to reply you so late!
Regards,
Angyoung

Browser running inside Java Application

Hi,
I have a fat client application that needs a web page display browser. Please recommend a good browser that I can run through Java code. I do not want to invoke a browser outside my application window.
Thanks!
Ashish Tengshe

The best java browser I know of is ICEbrowser:
http://www.icesoft.com
Unfortunately it costs a lot of money. Below are links to a couple others:
http://www.netcluesoft.com
http://home.earthlink.net/~hheister/

JSP codes for running a JAVA program

hello...
does anyone know the JSP codes for running a Java program from my web page?? i mean i already have my java program compiled... and i just want this java program to run in the background when I click on a button or a link...
Any idea about this?
plz advice..
avi

yes... u r somewhat right... but this runs on Jakarta Tomcat...
i'm using the Apache Http Server together with the ServletExec AS which enable the Apache server to run JSP..
I've created a package where i've put my classes...
WEB-INF/classes/tbd(package name)/my classes
and i've added.. package name.. in my java program..
and then in jsp... i've written..
<%@ page import="tdb.*"%>
<jsp:useBean id="exec" class="tdb.textdb" />
<%exec.convert_data();%>
but when i run the page it says the package does not exist...
can anyone tell where to place the folder WEB-INF so that it can run fine?
thx
avi

Running a java program in another java code

Hello,
I have a question.I wrote a java server code named server.java. In this server code, I receive another java class code called "HelloWorld.class" from another node. What I want to do is to execute the class HelloWorld inside server.java.
Briefly, I would like to run a compiled java code (class code)in another executing class code. How can I achieve this?
Thanks in advance
�ebnem Bora

Hi,
Sorry but your terminology isn't that clear. Are you trying:
1. To call methods on another class or
2. To launch a separate process that will run another class?
If it's either of these then they're not 'Advanced Language Topics' but simple:
// Scenario 1
// in Server class
HelloWorld hw = new HelloWorld();
hw.sayHello(); // or whatever the method is
// Scenario 2
Runtime.exec(new String [] {"java", "HelloWorld"}); // or whateverIs that of any help?
Dom.

Running Oracle startup or shutdown bat file from Java code

I have two bat files for the startup and shutdown of Oracle instance which works fine from the command prompt. But my requirement is to run it through a Java program. Please reply with full Java code. Also mention how I would get the status of the bat files that it is successfully executed or not and if not what is the error.

Your program is working fine, but there is another problem. What's happening now is I have to open the Login screen after the startup of oracle server is complete, but the next line of my program after Runtime.exec is the LoginScreen.show which immediately shows the login screen after executing Runtime.exec and when I am giving the login name and password and press enter, it shows Oracle not available exception, because the startup process is still in progress. I want to stop the execution of my next line of code until and unless my process of Oracle startup is complete.

Running the .class file from java code

I'm doing a kind of providing service like compiling and running Java code on server side and giving output to the end user.
Please suggest me an approach with code to run .class file from the Java code.
import java.io.*;
public class demo {
public static void main(String args[]) throws IOException, InterruptedException {
int result;
try {
System.out.println("command output:");
Process proc = Runtime.getRuntime().exec("java -cp . demoh");
InputStream in = proc.getInputStream();
result = proc.waitFor();
BufferedInputStream buffer = new BufferedInputStream(proc.getInputStream());
BufferedReader commandOutput = new BufferedReader(new InputStreamReader(buffer));
String line = null;
System.out.print(commandOutput);
try {
while ((line = commandOutput.readLine()) != null) {
System.out.print(line);
System.out.println("command output: " + line);
}//end while
commandOutput.close();
} catch (IOException e) {
//log and/or handle it
}//end catc
} catch (IOException e) {
System.err.println("IOException raised: " + e.getMessage());
}

What happened when you tried what you have there?

Running a java code

Similar Messages

Maybe you are looking for