MCI-Java: A Modified Java Virtual Machine Approach to Multiple Code Inheritance

Multiple Code Inheritance in Java

Java has multiple inheritance of interfaces, but only single inheritance of code. This situation leads to code being duplicated in Java library classes and applications. We describe a generalization of a Java Virtual Machine (JVM) to support multiple inheritance of code. Our approach places code in interfaces, without requiring language syntax changes or compiler modifications. In our extended ...

A dynamic, portable and safe approach to byte-code transformation

A powerful feature of the Java programming language is its user-definable class loading policy, which when combined with the namespace independence between class loaders, allows portable implementation of semidynamic program transformations. Such transformations can be used for a range of purposes, including optimization and semantic extension. In this paper we present a framework for semantic ...

Targeting the Java Virtual Machine with Genericity, Multiple Inheritance, Assertions and Expanded Types

Sharing the Runtime Representation of Classes Across Class Loaders

One of the most distinctive features of the Java programming language is the ability to specify class loading policies. Despite the popularity of class loaders, little has been done to reduce the cost associated with defining the same class by multiple loaders. In particular, implementations of the Java virtual machine (JVM ) create a complete runtime representation of each class regardless of ...

Jam - A Smooth Extension of Java with Mixins

In this paper we present Jam, an extension of the Java language supporting mixins, that is, parametric heir classes. A mixin declaration in Jam is similar to a Java heir class declaration, except that it does not extend a fixed parent class, but simply specifies the set of fields and methods a generic parent should provide. In this way, the same mixin can be instantiated on many parent classes,...