if not "%JAVA_HOME%"=="" goto javaHomeSet
for %%i in (java.exe) do set "JAVACMD=%%~$PATH:i"
goto checkJavaCmd

:javaHomeSet
set "JAVACMD=%JAVA_HOME%\bin\java.exe"

if not exist "%JAVACMD%" (
  echo The JAVA_HOME environment variable is not defined correctly, so Apache Maven cannot be started. >&2
  echo JAVA_HOME is set to "%JAVA_HOME%", but "%%JAVA_HOME%%\bin\java.exe" does not exist. >&2
  goto error
)

:checkJavaCmd

        Path bin = installDir.resolve("bin"); // NOI18N
        if (Files.isDirectory(bin)) {
            if (Os.IS_WINDOWS) {
                Path tool = bin.resolve(toolName + ".exe");
                if (Files.exists(tool)) {
                    return tool;
                }
            }
            Path tool = bin.resolve(toolName);
            if (Files.exists(tool)) {