Hello,all
I am using JCA to do some experment.But the first program can not run.The error message is:java.lang.IllegalStateException: Context not initialized.
My environment:
JDK 1.5
JCA 2.3.1
EPICS 3.14.8
The program:
import gov.aps.jca.Channel;
import gov.aps.jca.Context;
import gov.aps.jca.JCALibrary;
public class test {
public static void main(String[] args) {
try {
JCALibrary jca= JCALibrary.getInstance();
Context ctxt= jca.createContext(JCALibrary.JNI_THREAD_SAFE);
ctxt.printInfo();
Channel ch= ctxt.createChannel("light");
ctxt.pendIO(5.0);
ch.printInfo();
ch.destroy();
ctxt.destroy();
} catch(Exception ex) {
System.err.println(ex);
}
}
}
BaoChunlei
Control Group,IHEP
- Replies:
- RE: JCA using problem Guobao Shen (KEK)
- Re: JCA using problem J. Lewis Muir
- Navigate by Date:
- Prev:
Re: current measurement - hardware Rolf Keitel
- Next:
RE: JCA using problem Guobao Shen (KEK)
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
<2007>
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: JCA using problem Daron Chabot
- Next:
RE: JCA using problem Guobao Shen (KEK)
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
<2007>
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|