Invoking factory or static methods
To invoke a COBOL factory method or Java™ static method in a COBOL method
or client
program, code the class-name as the first operand of the INVOKE
statement.
For example, a client program could invoke one of the overloaded CheckingAccount factory methods called createCheckingAccount to create a checking account with account number 777777 and an opening balance of $300 by coding this statement:
Invoke CheckingAccount "createCheckingAccount"
using by value 777777 300
returning aCheckingAccount
To invoke a factory method from within the same class
in which you define the factory method, you also use the class-name
as the first operand in the INVOKE
statement.
Code the name of the method to be invoked either as a literal or as an identifier whose value at run time is the method-name. The method-name must be an alphanumeric or national literal or a category alphabetic, alphanumeric, or national data item, and is interpreted in a case-sensitive manner.
If an invoked method is not supported
in the class that you name in the INVOKE
statement, a severity-3 Language Environment® condition is raised at run time
unless you code the ON EXCEPTION
phrase in the INVOKE
statement.
The
conformance requirements for passing arguments to a COBOL factory
method or Java static method
in the USING
phrase, and receiving a return value
in the RETURNING
phrase, are the same as those for
invoking instance methods.
Example: defining a factory (with methods)
Invoking methods (INVOKE)
Using national data (Unicode) in COBOL
Coding interoperable data types in COBOL and Java