Learn More
The importance of formalising the speciication of standards has been recognised for a number of years. This paper advocates the use of the formal speciication language Object-Z in the deenition of standards. Object-Z is an extension to the Z language speciically to facilitate speciication in an object-oriented style. First, the syntax and semantics of(More)
The importance of formalising the speciication of standards has been recognised for a number of years. This paper advocates the use of the formal speciication language Object-Z in the deenition of standards. Object-Z is an extension to the Z language speciically to facilitate speciication in an object-oriented style. First, the syntax and semantics of(More)
Starting with a UML specification that captures the underlying functionality of some given Java-based concurrent system, we describe a systematic way to construct, from this specification, test sequences for validating an implementation of the system. The approach is to first extend the specification to create UML state machines that directly address those(More)
In object-oriented systems, it is often the case that an object will have an attribute whose value identiies (points or refers to) some other object in the system so that the identiied object can be sent messages. The association between objects determined by the object references in a system will generally result in a complex structure whose design and(More)
Over the years there has been an ongoing debate about which computer language to adopt for a first programming subject. Although some may not agree, the current consensus is that the object-oriented languages are winning the argument, and Java has increasingly become the language of choice for teaching beginners. But choosing the language is only the first(More)