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Java RMI Exception Problem

Posted on 2009-04-09
9
467 Views
Last Modified: 2013-12-14
I have a GUI which needs to pass variables to a class. If I try to make an instance of that class 'Asb asb = new Asb();'
 I get the error saying "unreported exception java.rmi.RemoteException; must be caught or declared to be thrown".
public class Asb extends UnicastRemoteObject implements Publisher,
		 Serializable
 
{
 
public Asb() throws RemoteException
     
   {
        
super();
            
     }
 
}

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Question by:namsu55
9 Comments
 
LVL 13

Expert Comment

by:MicheleMarcon
ID: 24113663
As you have declared, the Asb() constructor throws RemoteException.

You need to do this:

try{
Asb asb = new Asb();
//your code here
}catch (RemoteException e){
//something has gone wrong, you can put debug code or fix the problem.
System.out.println("Something bad happened!");
}
0
 

Author Comment

by:namsu55
ID: 24113805
Yeah that works, can you give me an example of system.out.println, where if connection is not made or not present (rmiregistry not turned on) throws an exception. From within the ABS class.
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LVL 12

Expert Comment

by:basav_com
ID: 24113821
throw(e);
0
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Expert Comment

by:basav_com
ID: 24113837
0
 

Author Comment

by:namsu55
ID: 24113842
try{
Asb asb = new Asb();
//your code here
}catch (RemoteException e){
//something has gone wrong, you can put debug code or fix the problem.
System.out.println("Something bad happened!");
}
throw(e);

That doesnt work it says incompatible types.
0
 
LVL 12

Expert Comment

by:basav_com
ID: 24113845
Actually you can declare the class throws exception:
See this example is very close to your question:
http://www.experts-exchange.com/Programming/Languages/Java/Q_20985361.html
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LVL 12

Accepted Solution

by:
basav_com earned 250 total points
ID: 24113874
try{
Asb asb = new Asb();
//your code here
}catch (RemoteException e){
//something has gone wrong, you can put debug code or fix the problem.
System.out.println("Something bad happened!");
throw(e);    ---->  You messed up the brackets
}
0
 

Author Comment

by:namsu55
ID: 24113897
It now says what it said before : "unreported exception java.rmi.RemoteException; must be caught or declared to be thrown".
0
 
LVL 17

Assisted Solution

by:Thomas4019
Thomas4019 earned 250 total points
ID: 24117024
I just use e.printStackTrace(); This causes it to print the Exception to the Console window.
try{
Asb asb = new Asb();
//your code here
}catch (RemoteException e){
e.printStackTrace();
}

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