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Java Module Release Notes

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Use Java Module to invoke Java code.

Guide: Java Module User Guide

2.0.7

September 4, 2026

What’s New

  • This release includes general security fixes.

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

2.0.6

August 3, 2026

What’s New

  • This release includes internal improvements for code quality and performance.

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

2.0.5

June 30, 2026

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

Fixed Issues

Issue Resolution ID

These libraries are upgraded to address reported security vulnerabilities:

  • The commons-lang3 library is upgraded to version 3.20.0.

  • The spring-core library is upgraded to version 6.2.19.

  • The mockito library is upgraded to version 5.23.0.

W-22944057

2.0.4

December 18, 2025

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

Fixed Issues

Issue Resolution ID

The spring-core library is upgraded to version 6.2.15 to address the CVE-2025-41249 security vulnerability.

W-20593403

2.0.3

October 29, 2025

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

Fixed Issues

Issue Resolution ID

The org.apache.commons:commons-lang3 library is upgraded to version 3.18.0 to address the CVE-2025-48924 security vulnerability.

W-19605039

2.0.2

September 9, 2025

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

Fixed Issues

Issue Resolution ID

The Spring framework is upgraded to version 6.2.10 to address the CVE-2025-41242 security vulnerability.

W-19578317

2.0.1

August 5, 2025

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

Fixed Issues

Issue Resolution ID

Java Module no longer exhibits incorrect behavior when used in a shared domain configuration with multiple applications that contain Java classes with the same fully qualified name (FQN). Java Module incorrectly cached classloading results across applications, resulting in method invocations resolving to the wrong application’s class. Now, the caching logic includes context classloader or application identity as part of the cache key.

W-18492205

2.0.0

June 30, 2025

What’s New

  • Java Module (and its dependencies) are now compilable and compatible only with Java 17.

  • To align with modern development practices and ensure continued compatibility with secure and supported libraries, Java Module is upgraded from Spring 5.x to Spring 6.x.

For more information about how to upgrade the connector to version 2.0, refer to Java Module のバージョン 2.x へのアップグレードおよび移行.

Compatibility

Application/Service Version

Mule

4.9.4 and later

OpenJDK

17

1.2.19

September 4, 2026

What’s New

  • This release includes general security fixes.

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

1.2.18

August 21, 2026

What’s New

  • This release includes internal improvements for code quality and performance.

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

Fixed Issues

Issue Resolution ID

The commonsLang library is upgraded to version 3.20.0 to address reported security vulnerabilities.

W-23441694

1.2.17

August 4, 2026

This version is deprecated. The new features and fixed issues for this version are in version 1.2.18.

1.2.16

October 29, 2025

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

Fixed Issues

Issue Resolution ID

The org.apache.commons:commons-lang3 library is upgraded to version 3.18.0 to address the CVE-2025-48924 security vulnerability.

W-19605039

1.2.15

August 4, 2025

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

Fixed Issues

Issue Resolution ID

Java Module no longer exhibits incorrect behavior when used in a shared domain configuration with multiple applications that contain Java classes with the same fully qualified name (FQN). Java Module incorrectly cached classloading results across applications, resulting in method invocations resolving to the wrong application’s class. Now, the caching logic includes context classloader or application identity as part of the cache key.

W-18492205

1.2.14

March 21, 2025

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

Fixed Issues

Issue Resolution ID

Java Module now contains patched Spring 5.x to fix security vulnerabilities.

W-17918454

1.2.13

March 25, 2024

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

Fixed Issues

Issue Resolution ID

The spring-core library is upgraded to version 5.3.33 to address reported security vulnerabilities.

W-15194448

1.2.12

December 12, 2023

What’s New

  • This connector is now compatible with Java 17.

Compatibility

Application/Service Version

Mule

4.1.1 and later

OpenJDK

8, 11, and 17

1.2.11

June 21, 2023

Compatibility

Application/Service Version

Mule

4.1.1 and later

Fixed Issues

Issue Resolution ID

The spring-core library is upgraded to version 5.3.28 to address reported security vulnerabilities.

W-13622235

1.2.10

June 28, 2022

What’s New

  • Upgraded versions of dependencies.

Compatibility

Application/Service

Version

Mule

4.1.1 and later

1.2.9

August 17, 2021

What’s New

  • Optimized the connector to improve its overall stability and performance. (JM-35)

Compatibility

Application/Service

Version

Mule

4.1.1 and later

1.2.8

April 8, 2021

Features

None.

Fixed Issues

  • Removed dependencies included in the Mule runtime engine to avoid warning messages during startup (JM-34)

1.2.7

November 4, 2020

Features

None.

Fixed Issues

  • Upgraded Spring version to 5.3.0 (JM-31)

1.2.6

December 9, 2019

Features

None.

Fixed Issues

  • Wrong OutputType for a method that returns a java.lang.Object type. (JM-14)

  • MUnit tests for metadata validation. (MU-1529)

  • Upgrade mule-extensions-parent, mule-core-modules-parent and mule-ee-core-modules-parent to 1.1.6. (MULE-17121)

  • Upgrade MUnit version to 2.2.1. (MULE-17301)

1.2.5

August 14, 2019

Features

  • Change execution pool to CPU_LITE for new instance operations. (MULE-17326)

  • Change execution pool to IO for invoke operations. (MULE-17329)

Fixed Issues

None.

1.2.4

May 30, 2019

Features

None.

Fixed Issues

  • Java module fails to invoke method that receives Optional<Pojo> (MULE-16932)

1.2.3

May 29, 2019

Features

None.

Fixed Issues

  • Java module fails to transform null into an empty Optional. (MULE-16918)

1.2.2

April 26, 2019

Features

None.

Fixed Issues

  • Upgrade Spring to 5.1.6.

  • Upgrade Apache Commons Lang to 3.8.1.

1.2.1

January 14, 2019

Features

  • Fixed an issue with invoking a method from a class that implements an interface with generics. This would produce a warning that there were multiple methods found that match the provided method.

Fixed Issues

  • JavaModule: no longer throws WARN messages with Generic interface implementation. (MULE-16316)

1.2.0

September 6, 2018

Features

  • It’s now possible to configure the Output MimeType of the Invoke and Invoke Static Operations.

  • Improved error handling, the connector used to not show the real error that occurred when executing Java methods.

  • New functions getRootCause and isCausedBy are now available to introspect Throwables.

  • In the extreme case where two parameters have the same simple name, such as some.Pojo and other.Pojo the full qualifier name can be used to avoid issues.

Fixed Issues

  • JavaModule: Support output MimeType parameter for runtime inference. (MULE-15283)

  • Java Module: Improve Error cause propagation. (MULE-15540)

  • Java Module: does not propagate execution error. (MULE-15262)

  • Java Module invokeStatic declares an error that is never thrown. (MULE-15461)

  • JavaModule: Support full qualifier name for parameter types to identify methods. (MULE-15009)

  • Migrate JavaModule tests to MTF. (MULE-15076)

  • Java Module: improve method not found error message. (MULE-15263)

  • Java Module: 'new' operation does not declare INVOCATION error. (MULE-15538)

  • Java Module: Fail to extract exception cause with default value. (MULE-15597)

1.1.2

August 14, 2019

Features

  • Provide proper classloading error information. (MULE-14938)

  • Improve error messages and exception propagation. (MULE-15263)

  • Change execution pool to CPU_LITE for new instance operations. (MULE-17326)

  • Change execution pool to IO for invoke operations. (MULE-17329)

Fixed Issues

  • InvokeStatic declares an error that is never thrown. (MULE-15461)

1.1.1

May 11, 2018

Minimum Mule Version

Mule 4.1.0

Features

  • Fixed an issue that made it impossible to pass null as a parameter.

  • Now when the arguments are passed by with their canonical name (arg0, arg1, etc.), parameter matching will be done by position.

Fixed Issues

  • JavaModule: Do best effort to do invocation with arg0, arg1…​ (MULE-15008)

  • null values causes Exception in parameterNeedsTransformation. (MULE-14990)

1.1.0

May 7, 2018

Minimum Mule Version

Mule 4.1.0

Features

  • When argument types don’t match the java function arguments, a best effort will be done to transform these arguments.

Fixed Issues

  • Java module doesn’t transform the arguments. (MULE-14861)

1.0.1

March 23, 2018

Minimum Mule Version

Mule 4.1.0

Features

  • Fixed an issue that happened when calling static methods from different classes with the same signature.

Fixed Issues

  • Invoke static second call wrong. (MULE-14785)

1.0.0

January 23, 2018

Minimum Mule Version

Mule 4.1.0

See Also