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contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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Apache Tomcat re-uses code from a number of other Apache projects. There are
several reasons why depending on the binary releases of those projects is not
ideal. These include:
- potential conflicts if a web application ships with the same JAR
- a large JAR where Tomcat only depends on a small fraction
GIT
===
Updates from Git are applied manually via patch files. Patch files are generated
using:
git diff <last SHA1>:<sub-tree> HEAD:<sub-tree> > temp.patch
The most recently merged SHA1 for the component below should be updated after
the patch file has been applied and committed
BCEL
----
Unused code is removed
Sub-tree:
src/main/java/org/apache/bcel
The SHA1 ID / tag for the most recent commit to be merged to Tomcat is:
rel/commons-bcel-6.10.0 (2024-07-23)
FileUpload
----------
Unused code is removed
Branch: 1.x
Sub-tree:
src/main/java/org/apache/commons/fileupload
The SHA1 ID / tag for the most recent commit to be merged to Tomcat is:
rel/commons-fileupload-1.6.0 (2025-06-05)
Note: Tomcat's copy of fileupload also includes classes copied manually from
Commons IO.
DBCP
----
Pool2
Unused classes removed
Sub-tree
src/main/java/org/apache/commons/pool2
The SHA1 ID / tag for the most recent commit to be merged to Tomcat is:
rel/commons-pool-2.13.1 (2025-12-30)
DBCP2
No unused code removed
Sub-tree
src/main/java/org/apache/commons/dbcp2
src/main/resources/org/apache/commons/dbcp2
The SHA1 ID / tag for the most recent commit to be merged to Tomcat is:
rel/commons-dbcp-2.14.0 (2025-12-16)