(skywalking) 01/01: docs: list Java 25 in backend runtime requirement

[wu...@apache.org]

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wu-sheng pushed a commit to branch docs/jre-requirement-java25
in repository https://gitbox.apache.org/repos/asf/skywalking.git

commit 880665b6c79b521ddb02e8959dcea79a16a3e3c4
Author: Wu Sheng <wu...@foxmail.com>
AuthorDate: Sat Jun 20 17:28:04 2026 +0800

    docs: list Java 25 in backend runtime requirement
    
    backend-setup.md said "Java 11/17/21", but since 10.4.0 the default
    (unsuffixed) OAP Docker image is built on eclipse-temurin:25-jre, and CI
    builds/tests on 11/17/21/25. Update the requirement to "Java 11, 17, 21,
    or 25" and note the default image tag is Java 25 alongside the published
    -java11/-java17/-java21 variants. Java 11 remains the compile target/minimum.
---
 docs/en/setup/backend/backend-setup.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/en/setup/backend/backend-setup.md b/docs/en/setup/backend/backend-setup.md
index 0460c94040..288ca5e67d 100755
--- a/docs/en/setup/backend/backend-setup.md
+++ b/docs/en/setup/backend/backend-setup.md
@@ -14,7 +14,7 @@ SkyWalking's backend distribution package consists of the following parts:
 
 ## Requirements and default settings
 
-Requirement: **Java 11/17/21**.
+Requirement: **Java 11, 17, 21, or 25**. The OAP is compiled for Java 11 (the minimum runtime), so the binary distribution runs on any of these. Official Docker images publish `-java11` / `-java17` / `-java21` tag variants; the default (unsuffixed) image tag is built on Java 25 (`eclipse-temurin:25-jre`).
 
 You should set up the database ready before starting the backend. We recommend to use BanyanDB.
 If you want to use other databases, please read the [storage document](backend-storage.md).