ETAPS 2004 was the seventh instance of the European Joint Conferences on Theory and Practice of Software. ETAPS is an annual federated conference that was established in 1998 by combining a number of existing and new conferences. This year it comprised ?ve conferences (FOSSACS, FASE, ESOP, CC, TACAS), 23 satellite workshops, 1 tutorial, and 7 invited lectures (not including those that are speci?c to the satellite events). The events that comprise ETAPS address various aspects of the system - velopment process, including speci?cation, design, implementation, analysis and improvement. The languages, methodologies and tools that support these act- ities are all well within its scope. Di?erent blends of theory and practice are r- resented, with an inclination towards theory with a practical motivation on the one hand and soundly based practice on the other. Many of the issues involved in software design apply to systems in general, including hardware systems, and theemphasisonsoftwareisnotintendedtobeexclusive.

Includes supplementary material: sn.pub/extras

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Invited Contributions.- Distributed Information Management with XML and Web Services.- A Formal Treatment of Context-Awareness.- Objects and Aspects.- Consistent Adaptation and Evolution of Class Diagrams during Refinement.- Measuring Aspect Cohesion.- Refactoring Object-Z Specifications.- Smart Cards.- Checking Absence of Illicit Applet Interactions: A Case Study.- A Tool-Assisted Framework for Certified Bytecode Verification.- Reasoning about Card Tears and Transactions in Java Card.- Components I.- Predictable Dynamic Plugin Systems.- A Correlation Framework for the CORBA Component Model.- Cadena: An Integrated Development Environment for Analysis, Synthesis, and Verification of Component-Based Systems.- Security and Web Services.- Actor-Centric Modeling of User Rights.- Modeling Role-Based Access Control Using Parameterized UML Models.- Compositional Nested Long Running Transactions.- DaGen: A Tool for Automatic Translation from DAML-S to High-Level Petri Nets.- Modeling and Requirements.- Integrating Meta-modelling Aspects with Graph Transformation for Efficient Visual Language Definition and Model Manipulation.- An Operational Semantics for Stateflow.- Improving Use Case Based Requirements Using Formally Grounded Specifications.- The GOPCSD Tool: An Integrated Development Environment for Process Control Requirements and Design.- Testing.- Automated Debugging Using Path-Based Weakest Preconditions.- Filtering TOBIAS Combinatorial Test Suites.- Systematic Testing of Software Architectures in the C2 Style.- Model Checking and Analysis.- Optimising Communication Structure for Model Checking.- Translating Software Designs for Model Checking.- Enhancing Remote Method Invocation through Type-Based Static Analysis.-Specification and Analysis of Real-Time Systems Using Real-Time Maude.- Components II.- A Systematic Methodology for Developing Component Frameworks.- Automating Decisions in Component Composition Based on Propagation of Requirements.