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java-migration

Guide Java application migrations across major versions with structured checklists and API replacement advice.

1|Updated Mar 16, 2026
Search Tags:#versioning#migration#java#upgrade#spring boot#jdk
One-click install
npx skills add https://github.com/iceflower/opencode-agents-and-skills --skill java-migration-iceflower
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: java-migration
Source: https://github.com/iceflower/opencode-agents-and-skills/tree/main/skills/java-migration
Command: npx skills add https://github.com/iceflower/opencode-agents-and-skills --skill java-migration-iceflower

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a comprehensive guide to migrating Java applications between versions, addressing breaking changes, and adopting new language features to ensure smooth upgrades and leverage modern Java capabilities.

Core Features & Use Cases

  • Version-Specific Guides: Detailed information on changes from Java 8 through Java 25.
  • Feature Adoption: Guidance on using new features like var, records, sealed classes, virtual threads, and pattern matching.
  • Migration Checklist: A step-by-step process for planning and executing Java version upgrades.
  • Use Case: You need to upgrade a Spring Boot application from Java 11 to Java 17. This Skill will guide you through the necessary code changes, dependency updates, and new features to adopt, like switch expressions and records.

Quick Start

Use the java-migration skill to understand the key changes when migrating from Java 11 to Java 17.

Frequently Asked Questions about java-migration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I upgrade my Spring Boot application from Java 11 to Java 17?▼

Upgrading a Spring Boot application from Java 11 to Java 17 requires following a structured migration checklist to update dependencies, resolve breaking changes, and adopt new language features like switch expressions and records.

What breaking changes do I need to check for when migrating Java versions?▼

When migrating Java versions, you need to check for breaking changes using a structured checklist that details API removals, deprecated syntax, and necessary API replacement guidance to ensure compatibility across major JDK updates.

Can I use virtual threads and sealed classes when upgrading my JDK?▼

Yes, upgrading your JDK allows you to adopt new language features like virtual threads, sealed classes, and pattern matching, enabling you to leverage modern Java capabilities for improved performance and code structure.

What is the best way to plan a major Java version upgrade?▼

The best way to plan a major Java version upgrade is to follow a step-by-step migration process that details version-specific changes from Java 8 through Java 25, ensuring smooth transitions and compatibility with frameworks like Spring Boot.

Does this Java migration guide cover upgrades from older versions like Java 8?▼

Yes, this Java migration guide covers version-specific changes and feature adoption details for upgrades ranging from Java 8 through Java 25, providing comprehensive API replacement guidance for older codebases.

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