Capture excetion from singleton instance

[Abrahim Daver]

Hello there,
I am trying to create a singleton object. I am getting that object in the class and using it. Now, if there is an exception thrown while creating that singleton object, how can I handle that..
Please refer follwing code for better understanding of the issue-

public class abc 
{
 
protected static pReadear preader = pReader.getInstance();
 
public static void main(String[] args){
       .....    
}
 
}

If there is an exception thrown while getting instance of pReader, how can I handle that?

Abra D.

[Jelle Klap]

You could try and intialize the static variable from within a static initializer block and wrap the getInstance() call with a try-catch block, but why would you want to? If an Execption occurs at that level it seems to me that it would be pretty much fatal, so how would you propose to correctly handle it?

[Abrahim Daver]

Actually I am trying to access pReader from main method as well as from other methods of class abc. Hence I have declared pReader as static at class level. Is there a way to handle this kind of scenario?

[Rodrigo Lopes]

You could do something like:

    
public class abc {
    protected static pReadear preader;
    public static void main(String[] args) {
        try {
            preader = pReader.getInstance();
        } catch (Exception e) {
            // exit application, show message to user, try something else
        }
       .....
    }
}

[Abrahim Daver]

Thanks Lopes,That makes sense.
But what if my code is like this

 
public class abc {    
protected static pReader preader = pReader.getInstance(); //This gets properties loaded.        
 
public void startProcess() throws Exception
{
      //Get values from pReader
      preader.getPropValue("Pos");
}
 

public static void main(String[] args) 
{        
try {   
        startProcess();   
} catch (Exception e) {   System.exit(1);              }       
}
 

}   

I don't want to pass pReader object through startProcess method.

[Manuel Leiria]

Why are you making pReader static if it is already a singleton?