MavenSimpleLogger stdout = (MavenSimpleLogger) context.loggerFactory.getLogger("stdout");
        MavenSimpleLogger stderr = (MavenSimpleLogger) context.loggerFactory.getLogger("stderr");
        stdout.setLogLevel(LocationAwareLogger.INFO_INT);
        stderr.setLogLevel(LocationAwareLogger.INFO_INT);
        PrintStream psOut = new LoggingOutputStream(s -> stdout.info("[stdout] " + s)).printStream();

  val showHeaders: Boolean by option("-i", "--include").help("Include protocol headers in the output").flag()

  val showHttp2Frames: Boolean by option("--frames").help("Log HTTP/2 frames to STDERR").flag()

  val referer: String? by option("-e", "--referer").help("Referer URL")

  val verbose: Boolean by option("-v", "--verbose").help("Makes $NAME verbose during the operation").flag()

     *
     * @param args CLI args
     * @param workingDirectory working directory
     * @param stdout stdout
     * @param stderr stderr
     * @return return code
     */
    public int doMain(String[] args, String workingDirectory, PrintStream stdout, PrintStream stderr) {
        PrintStream oldout = System.out;
        PrintStream olderr = System.err;

        final Set<String> realms;

    "$JAVACMD" -version >/dev/null 2>&1 || {
      echo "Error: Java not found. Please set JAVA_HOME." >&2
      return 1
    }

    # Run the parser using source-launch mode
    # Capture both stdout and stderr for comprehensive error reporting
    parser_output=$("$JAVACMD" "$MAVEN_HOME/bin/JvmConfigParser.java" "$1" "$MAVEN_PROJECTBASEDIR" 2>&1)
    parser_exit=$?

    if [ -n "$MAVEN_DEBUG_SCRIPT" ]; then

 - Log messages in JSON format are written to stderr by default now (same as text format) instead of stdout. Users who expected JSON output on stdout must now capture stderr instead or in addition to stdout. ([#106146](https://github.com/kubernetes/kubernetes/pull/106146), [@pohly](https://github.com/pohly)) [SIG API Machinery, Architecture, Cluster Lifecycle...

- When a watch is closed by an HTTP2 load balancer and we are told to go away, skip printing the message to stderr by default.
- Spedup kubectl by >10 when calling out to kube-apiserver for discovery information. ([#73345](https://github.com/kubernetes/kubernetes/pull/73345), [@sttts](https://github.com/sttts))

- Added a `Stream` field to `PodLogOptions`, which allows clients to request certain log stream (stdout or stderr) of the container.

- Kubectl version changed to write a warning message to stderr if the client and server version difference exceeds the supported version skew of +/-1 minor version. ([#98250](https://github.com/kubernetes/kubernetes/pull/98250), [@brianpursley](https://github.com/brianpursley)) [SIG CLI]

- Update the system-validators library to v1.5.0. Includes validation for `seccomp` and fixes a stdout/stderr problem in the Docker validator. ([#103390](https://github.com/kubernetes/kubernetes/pull/103390), [@ironyman](https://github.com/ironyman))
- Updates the following images to pick up CVE fixes:
  - `debian` to v1.8.0

- Kubeadm: all warning messages are printed to stderr instead of stdout. ([#107467](https://github.com/kubernetes/kubernetes/pull/107467), [@SataQiu](https://github.com/SataQiu))