Java 8 Integration with .NET

Modernize Without Migration

The Challenge

  • ❌ Java 8 core systems in production
  • ❌ Migration cost: $200K-$2M per project
  • ❌ Timeline: 6-18 months minimum
  • ❌ High risk: breaking changes, testing
  • ❌ Business value: zero (just keeps lights on)

The JCOBridge Solution

  • ✅ Keep Java 8 systems as-is
  • ✅ Add .NET capabilities now
  • ✅ Deploy in days, not months
  • ✅ Low risk: no Java code changes
  • ✅ Immediate business value

How It Works


┌──────────────────┐
│ Java 8 Legacy    │ ← No changes required
│ Business Logic   │
└────────┬─────────┘
         │
         ↓ JCOBridge
┌────────────────────┐
│ .NET Modern Layer  │ ← New capabilities
│ • Azure Cloud      │
│ • ML.NET AI/ML     │
│ • Modern APIs      │
└────────────────────┘

Why This Works

  • In-Process Communication: JCOBridge uses JNI for direct, fast communication
  • Zero Serialization: Native pointers eliminate data copying overhead
  • Type Safe: Strongly-typed APIs in both directions
  • Production Proven: Battle-tested in enterprise environments

Common Use Cases

🏦 Financial Services

Challenge: Java 8 core banking, need fraud detection

Solution: Add ML.NET fraud models without touching core banking

Result: ML in production in 2 weeks, $1.9M migration avoided

🏭 Manufacturing

Challenge: Java 8 MES, need cloud analytics

Solution: Stream data to Azure via .NET bridge

Result: Real-time dashboards, zero production disruption

🏛️ Government

Challenge: Certified Java 8 systems, limited budget

Solution: Add modern capabilities via .NET integration

Result: Modernization without recertification costs

Java 8 Timeline: You Have Options

Now (2026)

Start integrating with JCOBridge

2027-2029

Java 8 Extended Support active
Modernize at your pace

December 2030

Java 8 Extended Support ends
By then, already modernized via .NET

Smart Strategy: Don’t rush Java migration. Integrate with .NET
now to add modern capabilities. Migrate Java runtime when your timeline permits—
you have until 2030.

Technical Details

Supported Configurations

Java Version Minimum JRE Support Status
Java 8 1.8.0_161+ ✅ Fully Supported
Java 11 11.0.0+ ✅ Fully Supported
Java 17 17.0.0+ ✅ Fully Supported
Java 21 21.0.0+ ✅ Fully Supported
Java 25 25.0.0+ ✅ Fully Supported

Compatible JVM Distributions

  • Oracle JDK
  • OpenJDK
  • Amazon Corretto (free LTS)
  • Azul Zulu (free LTS)
  • Eclipse Temurin
  • Red Hat OpenJDK
  • and other compatible distributions

Frequently Asked Questions

Do I need to modify my Java 8 code?

No! JCOBridge works with existing Java 8 bytecode. Zero changes required to your Java applications.

What about Java 8 security updates?

Oracle provides Extended Support until December 2030. Additionally, free distributions like Amazon Corretto and Azul Zulu provide long-term security updates beyond that.

What’s the performance impact?

JCOBridge uses in-process JNI with zero-copy memory sharing. Performance is typically within 5-10% of pure Java or pure .NET calls. Much faster than REST/gRPC alternatives.

Is this a temporary workaround or long-term solution?

Both! It’s production-grade for long-term use. Many customers use it as permanent integration layer. Others use it during gradual Java migration. Your choice.