[7.2.0] Update compile-source.md with JDK21 requirements. (bazelbuild…

…#22023)

Fixes bazelbuild#21821.

PiperOrigin-RevId: 625316799
Change-Id: I2691b0304a80af483d2630491064371783f65422

Commit
bazelbuild@d1cecc8

Co-authored-by: Googler <tanzhengwei@google.com>

site/en/install/compile-source.md

@@ -191,7 +191,7 @@ For instructions for Windows, see [Bootstrap Bazel on Windows](#bootstrap-window
 
 * **C++ build toolchain**
 
-* **JDK.** Version 11 is required.
+* **JDK.** Version 21 is required.
 
 * **Python**. Versions 2 and 3 are supported, installing one of them is
  enough.
@@ -200,7 +200,7 @@ For example on Ubuntu Linux you can install these requirements using the
 following command:
 
 ```sh
-sudo apt-get install build-essential openjdk-11-jdk python zip unzip
+sudo apt-get install build-essential openjdk-21-jdk python zip unzip
 ```
 
 #### 2.2. Bootstrap Bazel on Unix {:#bootstrap-unix}
@@ -239,11 +239,11 @@ For instructions for Unix-like systems, see
  of Visual Studio 2015 or newer, or by installing the latest [Build Tools
  for Visual Studio 2017](https://aka.ms/BuildTools).
 
-* **JDK.** Version 11 is required.
+* **JDK.** Version 21 is required.
 
 * **Python**. Versions 2 and 3 are supported, installing one of them is
  enough. You need the Windows-native version (downloadable from
- [https://www.python.org](https://www.python.org)).  Versions installed via
+ [https://www.python.org](https://www.python.org)). Versions installed via
  pacman in MSYS2 will not work.
 
 #### 2.2. Bootstrap Bazel on Windows {:#bootstrap-windows}
@@ -268,14 +268,14 @@ For instructions for Unix-like systems, see
  export BAZEL_VS="C:/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools"
  export BAZEL_SH="$(cygpath -m $(realpath $(which bash)))"
  export PATH="/c/python27:$PATH"
- export JAVA_HOME="C:/Program Files/Java/jdk1.8.0_112"
+ export JAVA_HOME="C:/Program Files/Java/jdk-21"
 
  or (using BAZEL\_V<b>C</b>):
 
  export BAZEL_VC="C:/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools/VC"
  export BAZEL_SH="$(cygpath -m $(realpath $(which bash)))"
  export PATH="/c/python27:$PATH"
- export JAVA_HOME="C:/Program Files/Java/jdk1.8.0_112"
+ export JAVA_HOME="C:/Program Files/Java/jdk-21"
 
 3. `cd` to the directory where you unpacked the distribution archive.