PostgreSQL 7.3.1 multiple schema select query error: java.sql.SQLException: ERROR: parser: parse error at or near "."

I am using postgresql 7.3.1 on windows 2000. I downloaded the lattest
postgres jdbc driver
for version 7.3.1, called pg73jdbc3.jar and using JBoss-3.04_Tomcat-4.0.6.

I created one database called 'testdb', and a scheme called 'sc_test', with
a table called 'tbl_company' under the sc_test scheme.
When i execute the following query from java code, i get the following
error:

java.sql.Statement stmt1 = conn.createStatement();
Resultset rs = stmt1.executeQuery("SELECT * FROM sc_test.tbl_company");

15:43:39,877 ERROR [STDERR] java.sql.SQLException: ERROR: parser: parse
error at or near "."
15:43:39,877 ERROR [STDERR] at
org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:131)
15:43:39,877 ERROR [STDERR] at
org.postgresql.jdbc1.AbstractJdbc1Connection.ExecSQL(AbstractJdbc1Connection
.java:505
)
15:43:39,888 ERROR [STDERR] at
org.postgresql.jdbc1.AbstractJdbc1Statement.execute(AbstractJdbc1Statement.j
ava:320)
15:43:39,888 ERROR [STDERR] at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.j
ava:48)
15:43:39,888 ERROR [STDERR] at
org.postgresql.jdbc1.AbstractJdbc1Statement.executeQuery(AbstractJdbc1Statem
ent.java:
153)
15:43:39,898 ERROR [STDERR] at
org.postgresql.jdbc1.AbstractJdbc1Statement.executeQuery(AbstractJdbc1Statem
ent.java:
141)
15:43:39,908 ERROR [STDERR] at
org.jboss.resource.adapter.jdbc.local.LocalStatement.executeQuery(LocalState
ment.java
:211)
15:43:39,908 ERROR [STDERR] at
com.ilium.eapps.compmenu.dao.GenericModuleDAO.list(GenericModuleDAO.java:246
)
15:43:39,908 ERROR [STDERR] at
com.ilium.eapps.compmenu.ejb.sb.SBModuleBean.getList(SBModuleBean.java:258)
15:43:39,918 ERROR [STDERR] at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
15:43:39,918 ERROR [STDERR] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
15:43:39,918 ERROR [STDERR] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)

15:43:39,928 ERROR [STDERR] at
java.lang.reflect.Method.invoke(Method.java:324)
15:43:39,928 ERROR [STDERR] at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(Stateles
sSessionC
ontainer.java:660)
15:43:39,938 ERROR [STDERR] at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(Cach
edConnect
ionInterceptor.java:186)
15:43:39,938 ERROR [STDERR] at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSe
ssionInst
anceInterceptor.java:77)
15:43:39,948 ERROR [STDERR] at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor
.java:107
)
15:43:39,948 ERROR [STDERR] at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.
java:178)

15:43:39,958 ERROR [STDERR] at
org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:60)
15:43:39,958 ERROR [STDERR] at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:13
0)
15:43:39,958 ERROR [STDERR] at
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:204)
15:43:39,968 ERROR [STDERR] at
org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContainer.jav
a:313)
15:43:39,968 ERROR [STDERR] at
org.jboss.ejb.Container.invoke(Container.java:712)
15:43:39,968 ERROR [STDERR] at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
15:43:39,978 ERROR [STDERR] at
org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:98)
15:43:39,978 ERROR [STDERR] at
org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:102)
15:43:39,978 ERROR [STDERR] at
org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:77
)
15:43:39,988 ERROR [STDERR] at
org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:80)
15:43:39,988 ERROR [STDERR] at
org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInter
ceptor.ja
va:111)
15:43:39,988 ERROR [STDERR] at
org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
15:43:39,998 ERROR [STDERR] at $Proxy33.getList(Unknown Source)
15:43:39,998 ERROR [STDERR] at
com.ilium.eapps.compmenu.controller.ModuleAction.performList(ModuleAction.ja
va:163)
15:43:39,998 ERROR [STDERR] at
com.ilium.eapps.compmenu.controller.ModuleAction.execute(ModuleAction.java:1
31)
15:43:40,008 ERROR [STDERR] at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces
sor.java:
465)
15:43:40,008 ERROR [STDERR] at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
15:43:40,008 ERROR [STDERR] at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1422)
15:43:40,018 ERROR [STDERR] at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:505)
15:43:40,018 ERROR [STDERR] at
javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
15:43:40,018 ERROR [STDERR] at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
15:43:40,028 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterCha
in.java:247)
15:43:40,028 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:
193)
15:43:40,038 ERROR [STDERR] at
com.ilium.eapps.syswar.filter.SetCharacterEncodingFilter.doFilter(SetCharact
erEncodin
gFilter.java:147)
15:43:40,038 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterCha
in.java:213)
15:43:40,048 ERROR [STDERR] at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:
193)
15:43:40,048 ERROR [STDERR] at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:243)
15:43:40,058 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
15:43:40,058 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
15:43:40,058 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
15:43:40,068 ERROR [STDERR] at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:190)
15:43:40,068 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
15:43:40,068 ERROR [STDERR] at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
15:43:40,068 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
15:43:40,078 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
15:43:40,078 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
15:43:40,078 ERROR [STDERR] at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
15:43:40,088 ERROR [STDERR] at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
15:43:40,088 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
15:43:40,088 ERROR [STDERR] at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)

15:43:40,098 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
15:43:40,098 ERROR [STDERR] at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
15:43:40,098 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
15:43:40,108 ERROR [STDERR] at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
15:43:40,108 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
15:43:40,108 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
15:43:40,108 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
15:43:40,118 ERROR [STDERR] at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
15:43:40,118 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
15:43:40,118 ERROR [STDERR] at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
15:43:40,128 ERROR [STDERR] at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
15:43:40,128 ERROR [STDERR] at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1027)
15:43:40,128 ERROR [STDERR] at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125
)
15:43:40,128 ERROR [STDERR] at java.lang.Thread.run(Thread.java:536)

What would the possible cause of the error??
The above query run fine when using pgadmin2 client.

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