Which programming language is commonly used for developing Guidewire applications?

Guidewire applications are primarily developed using Java due to their foundational architecture and the platform's reliance on Java for backend services. Java is well-known for its portability, scalability, and robustness, making it an ideal choice for enterprise-level applications like those created with Guidewire. It allows developers to utilize a wide range of tools and libraries that enhance application functionality, making the development process more efficient.

Additionally, Guidewire extensively uses Java in its core platform, including the rules engine and the configuration framework. This aligns with industry standards where Java is frequently deployed for building large-scale, high-performance applications that require strong object-oriented programming capabilities.

While other programming languages such as C#, Python, and Ruby have their own merits and use cases, they are not the primary languages employed within the Guidewire ecosystem. This specificity to Java is essential for anyone looking to develop or customize Guidewire software effectively.