Question

I am trying to cast a object during an if – else statement as follows:

if(sourceSystem.equalsIgnoreCase("Src")) {
  MO object = (MO) transformer.create(message,sourceSystem,flowName);
} else {  
  UO object = (URO) transformer.create(message,sourceSystem,flowName);  
}

However it cannot be accessed outside of these?

validator.validate(object);

cannot be resolved to a variable. But surely the object is being created an assigned within the if-else statement. The object will always be created, therefore why is the compiler telling me it cannot be resolved to a variable. Yes I get local and global vairables however if I need to access a common method between UO and MO.

Answer 1

You can’t achieve what you want this way. Better try this:

Object object = transformer.create(message,sourceSystem,flowName);
if( object instanceof MO )
{
  //cast and use it as MO
}//if
else
{
  //cast and use it as UO
}//else

Inheritance could help you to group code of both blocks if UO and MO share the methods you use in each block.