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A Systematic Approach for Java Software Upgrades
- The article emphasizes the importance of software systems facilitating evolution in functionality and technological upgrades, particularly in domains like finance, e-commerce, and transportation.
- A systematic approach to Java software upgrades is discussed, focusing on upgrading technology without altering business functionality.
- The article details a software upgrade project for an airline operations subdomain using Java, J2EE technologies, and various open-source software libraries.
- Different technologies used in the application, including Java, EJB, and Oracle RAC, are highlighted in the 'As Is Technology Landscape' diagram.
- Java upgrading considerations and the roadmap for Java SE support, with a focus on targeting Java 21 for the upgrade project, are explained.
- Transitioning from Java EE to Jakarta EE for active enterprise Java development and upgrading EJB specifications to enhance compatibility with newer releases are discussed.
- An approach for EJB upgrade using Hibernate and JPA implementations is outlined, along with considerations for upgrading the application container like WildFly.
- The article addresses the dilemma of choosing component and container versions for technology upgrades, emphasizing the need for compatibility analysis.
- A structured approach to reveal version compatibility using diagrams is explained, guiding the decision-making process for selecting compatible software versions.
- The iterative project execution steps for technology upgrades are listed, including aligning container runtime, upgrading libraries, and conducting validation processes.
- The conclusion underscores the importance of structured approaches and previous experience in planning and executing technology upgrade projects for software applications.
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