Java.lang.Exception problem .. help needed
I have a class and i am trying to access a method of another class that is reading an object.
public void read(String filename) throws Exception {
String fn = filename;
ObjectInputStream out = null;
Object object = null;
try {
FileInputStream file = new FileInputStream(fn);
out = new ObjectInputStream(file);
object = out.readObject();
out.close();
} catch (java.io.IOException IOE) {
if (out != null)
try {
out.close();
} catch (Exception ex) {}
throw IOE;
When i am compiling the program it is giving me this error
unreported exception java.lang.Exception; must be caught or declared to be thrown
I'm quite new to java ... could you tell me how to catch this exception
its in this part
scoreTable.read("scores.txt");
Thanks
Try this :
private void someMethod(){
try{
read("c:\\bank\\testobject.txt");
}catch(IOException ex){
ex.printStackTrace();
}catch(ClassNotFoundException ex){
ex.printStackTrace();
// you can use the object here
Object object;
public void read(final String filename) throws IOException, ClassNotFoundException{
ObjectInputStream out = null;
object = null;
try{
out = new ObjectInputStream(new FileInputStream(filename));
object = out.readObject();
}finally{
if( out != null ){
out.close();
}
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Many thanks for your collaboration<< Do not post the same question across a number of forums >>
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Thank you for your help!
Message was edited by:
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public void startApp() {
display= Display.getDisplay(this);
frm= new Form("First Form");
frm.append("This is Sample Form;");
// frm.addCommand(Ok_cmd);
frm.addCommand(Exit_cmd);
frm.setCommandListener(this);
display.setCurrent(frm);
public void pauseApp() {
public void destroyApp(boolean unconditional) {
public void commandAction(Command c, Displayable d) {
if(c==Exit_cmd){
notifyDestroyed();
}The cause is case mismatch.
Your method signature : public int Add2Numbers(int x,int y) --- Upper Case
But the signature produced is
ouldn't find a matching Java operation for WSDD operation "add2Numbers" (2 args)
( from the error trace ) -- Lower case.
Change the case of your method to add2number (lowercase ) as per conventions and you code will work.
Rgdz,
Saroj Kumar -
Java.lang.Exception: Invalid AD_TOP Oracle Applications 11i
Hi,
I have tried to complete Oracle Application 11i installation, but I have one problem.
I have multi node installation with 2 nodes(Virtual nodes with OEL 4).
First for database software and database and second for everything else.
I have successfully finished installation on database node and everything passed fine,
but when I have started installation with same configuration file (I have created it on the database node)
on the second node
I get the message in the log:
Starting CVM on Middle Tier.....
java.lang.Exception: Invalid AD_TOP
and my installation process wafting along time.
Can anybody help me with this problem.
Thanks,
Dragan.I have found on this location /baza/Stage11i/oraiAS/Disk1/ias/stage
problematic archive Archive: 806_d2pm.zip
I have tried to unzip problematic archive and I get:
[root@maximus stage]# unzip 806_d2pm.zip
Archive: 806_d2pm.zip
replace d2pm/install/relnotes/relnotes.map? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
replace d2pm/install/relnotes/relnotes.vrf? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
replace d2pm/install/relnotes/relnotes.ins? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
replace d2pm/install/relnotes/partial.prd? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
replace d2pm/install/relnotes/partial.prd.PRE_P15? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
replace d2pm/install/relnotes/partial.prd.PRE_P16? [y]es, [n]o, [A]ll, [N]one, [r]ename: n
[root@maximus stage]#
What can I do now?
Best regards,
Dragan -
When i run my web-application with the embedded OC4J server, the following error message is prompted:
java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
void MyFolder.objects.MyObject.<init>(oracle.jbo.ApplicationModule, java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest)
void MyFolder.servlet.MyServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
void com.evermind.util.ThreadPoolThread.run()
Question:
- What is the cause of this error message? How to avoid?
- I intended to deploy my application to 9IAS server. Will the same problem occurs too?
Thanks for your reply!Hi Pig,
When i run my web-application with the embedded OC4J server, the following error message is prompted:
java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
void MyFolder.objects.MyObject.<init>(oracle.jbo.ApplicationModule, java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest)
void MyFolder.servlet.MyServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
void com.evermind.util.ThreadPoolThread.run()
Question:
- What is the cause of this error message? How to avoid?.
From the Oracle error message documentation:
ORA-00020 maximum number of processes (string) exceeded
Cause: All process state objects are in use.
Action: Increase the value of the PROCESSES initialization parameter.
Another alternative approach may be to configure your Connection pool and/or your ApplicationModule pool to optimize the use of
database connections and/or restrict the number of database connections used by the application. For example, if your application
has declared many root ApplicationModules (i.e. more than one ApplicationModule pool is in use) then it may help to enable the
jbo.doconnectionpooling switch so that each ApplicationModule instance in the pools does not maintain a dedicated database
connection while not in use. Another alternative if you are using the BC4J connection pool (not a JDBC datasource) may be to
restrict the number of connections the pool can create to < 150 with the jbo.maxpoolsize switch. However, please note that this
may have an impact on throughput.
- I intended to deploy my application to 9IAS server. Will the same problem occurs too?.
This is a database issue. So, yes.
Hope this helps.
JR -
Receiving error message: java.lang.Exception: Attempted to use a 5.0 DataSource outside of a 2.3 Servlet
The application worked fine with 2.2 servlet version and data source 4.0
But i need to add some filter in web.xml so
I changed the servlet version in my web.xml from
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> to
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
and created a data source version 5 in websphere server 6.0.0.1
After that it is throwing the above mentioned error. pls help me on this.
ThanksIs there anything i need to change in my application.xml
<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN" "http://java.sun.com/j2ee/dtds/application_1_2.dtd">
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