Returning objects

• A method can return any data type, including class types.

• An example is the ErrorMsg class, which can be used to report errors.

• The getErrorMsg() method of the ErrorMsg class returns a String object.

• This String object contains the description of an error based on the error code received.

• Example:
  

• You can return objects from classes you create yourself.

• Example: reworked version of the previous program with two error classes.

• The Err class encapsulates an error message along with a severity code.

• The ErrorInfo class defines a method called getErrorInfo().

• The getErrorInfo() method returns an object of class Err.

• Every time getErrorInfo() is called, a new Err object is created and returned.

• The Err object reference is used in main() to display the error message and severity code.

• An object returned by a method continues to exist until it is no longer referenced.

• When there are no more references to the object, it is the target of garbage collection.

• The object is not destroyed just because the method that created it is terminated.

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