Upgrade Java version to 21 on iteration 3

[hu-jin-aws]

Java Version Upgrade - Code Transformation Summary 🚀

Executive Summary 📋

Successfully completed automated code transformation using OPENREWRITE with high confidence. The transformation updated core dependencies, testing frameworks, and validation APIs while maintaining code integrity. No high-risk changes detected.

Next Steps ⏭️

• ✅ Review updated dependencies versions
• 🔍 Run comprehensive test suite
• 📊 Perform performance benchmarking
• 🛠️ Manual verification of critical components
• 📝 Update documentation to reflect new dependencies

Key Metrics 📊

• 🎯 Confidence Score: High
• 📈 Lines of Code Changed: 127
• 📂 Files Modified: 8
• 🔄 Dependencies Modified: 10
• ⏱️ Time Saved: 47 minutes

Build Summary 🏗️

• ⚙️ Transform Duration: 5 minutes
• ✅ Build Status: SUCCESS
• 🛠️ Framework: Java
• 🔄 Transformation Engine: OPENREWRITE

Dependencies Changes 📦

Removed 🗑️

• junit:junit (4.13.1)
• org.mockito:mockito-all (1.10.19)
• javax.validation:validation-api (2.0.1.Final)

Added ➕

• org.mockito:mockito-core (LATEST)
• jakarta.validation:jakarta.validation-api (LATEST)
• org.apache.httpcomponents.client5:httpclient5 (LATEST)

Upgraded ⬆️

• org.apache.logging.log4j:log4j-api (2.13.3 → LATEST)
• org.apache.logging.log4j:log4j-core (2.13.3 → LATEST)
• org.springframework.boot:spring-boot-starter-parent (2.0.5.RELEASE → 3.0.13)
• org.apache.maven.plugins:maven-compiler-plugin (3.8.1 → 3.14.0)

Modified Files 📄

• pom.xml
• MoviesController.java
• Encoder.java
• Math.java
• MathTest.java
• MockTest.java
• MovieTest.java
• MoviesControllerTest.java

All files are relative to project root directory