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Neelu edited this page Jul 26, 2026 · 1 revision

☕ Java 25: The Next Frontier

Release Date: September 2025 | LTS: Yes | Status: 🚀 Latest LTS

📋 Table of Contents

  1. Overview
  2. Core Features
  3. Code Examples
  4. Best Practices
  5. Migration Guide

🎯 Overview

✍️ TODO: Add a summary of what Java 25 focuses on as an LTS release — e.g., which preview features from 21–24 got finalized, and what's newly introduced.

Java 25 is the latest Long-Term Support (LTS) release, following Java 21. As an LTS release, it consolidates and finalizes several preview/incubator features from Java 22–24, alongside new capabilities.

Java 21 (LTS, 2023)  →  Java 22–24 (interim)  →  Java 25 (LTS, 2025)
      │                        │                          │
      ├─ Virtual Threads       ├─ Preview features         ├─ ??? (fill in)
      ├─ Pattern Matching      ├─ Foreign Function API      ├─ ???
      └─ Record Patterns       └─ ...                       └─ ???

🚀 Core Features

✍️ Add each finalized/new Java 25 feature below. Use this template per feature so it stays consistent with the rest of the guide series (see Java 8 Guide and Java 21 Guide for the format).

1️⃣ [Feature Name]

What: One-line description of the feature and the problem it solves.

Status: Preview / Standard / Finalized (from JEP ###)

// Before Java 25
// ...

// With Java 25
// ...

Why it matters: Brief explanation of the real-world benefit (performance, readability, safety, etc.)

2️⃣ [Feature Name]

What: ...

// Code example

3️⃣ [Feature Name]

What: ...

// Code example

💻 Code Examples

✍️ Add runnable example classes here, matching the project structure convention: src/main/java/java25/<FeatureName>Example.java

package java25;

public class NewFeatureExample {
    public static void main(String[] args) {
        // TODO: demonstrate the feature
    }
}

💡 Best Practices

✍️ Add do's/don'ts once features are finalized, following the style used in the Java 8 guide.

✅ Do's

  • TODO

❌ Don'ts

  • TODO

🔧 Performance Considerations

✍️ Note any JVM/runtime performance changes specific to Java 25 (e.g., GC updates, startup time, virtual thread scheduler improvements).

🔄 Migration Guide

Upgrading from Java 21 (LTS) to Java 25 (LTS)

# Using SDKMAN
sdk install java 25-tem
sdk use java 25-tem

# Verify
java -version

Checklist:

  • Update pom.xml / build.gradle source/target compatibility to 25
  • Review deprecated/removed APIs between 21 → 25
  • Re-run test suite against the new JVM
  • Check third-party library compatibility (Spring Boot, etc.)
  • Review any preview features you were using in 21–24 — confirm they're finalized or update accordingly

✍️ Fill in specific breaking changes / deprecations once confirmed.

🎓 Takeaways

✍️ Summarize the 3–5 biggest wins of Java 25 once the feature list is finalized.

🔗 Related Guides

⬅️ Back to Main Guide

Made with ☕ by Neelu Sahai — feature details to be added as Java 25 rolls out.

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