jar build 동작 확인을 위한 Window cmd 이용 중 Build failed with an exception 오류

확인해보니까 Gradle 설정은 21로 해두었지만 jdk-17.0.8.101-hotspot이 기본 환경 변수로 설정되어있고 JDK21이 실제로 설치가 안되었을때는 직접설치하고 환경변수경로를 JDK21 경로로 바꿔줘야하는거죠?

안녕하세요. 박진재님, 공식 서포터즈 David입니다.

네, 맞습니다.

감사합니다.

저 오류 무시 후 build/libs 에 java -jar 파일도 실행해봤는데 아래와 같이 오류가떠서 이럴땐 어떻게 해야하는지 궁금합니다.

Error: -jar requires jar file specification

Usage: java [options] <mainclass> [args...]

(to execute a class)

or java [options] -jar <jarfile> [args...]

(to execute a jar file)

or java [options] -m <module>[/<mainclass>] [args...]

java [options] --module <module>[/<mainclass>] [args...]

(to execute the main class in a module)

or java [options] <sourcefile> [args]

(to execute a single source-file program)

Arguments following the main class, source file, -jar <jarfile>,

-m or --module <module>/<mainclass> are passed as the arguments to

main class.

where options include:

-cp <class search path of directories and zip/jar files>

-classpath <class search path of directories and zip/jar files>

--class-path <class search path of directories and zip/jar files>

A ; separated list of directories, JAR archives,

and ZIP archives to search for class files.

-p <module path>

--module-path <module path>...

A ; separated list of elements, each element is a file path

to a module or a directory containing modules. Each module is either

a modular JAR or an exploded-module directory.

--upgrade-module-path <module path>...

A ; separated list of elements, each element is a file path

to a module or a directory containing modules to replace

upgradeable modules in the runtime image. Each module is either

a modular JAR or an exploded-module directory.

--add-modules <module name>[,<module name>...]

root modules to resolve in addition to the initial module.

<module name> can also be ALL-DEFAULT, ALL-SYSTEM,

ALL-MODULE-PATH.

--enable-native-access <module name>[,<module name>...]

modules that are permitted to perform restricted native operations.

<module name> can also be ALL-UNNAMED.

--list-modules

list observable modules and exit

-d <module name>

--describe-module <module name>

describe a module and exit

--dry-run create VM and load main class but do not execute main method.

The --dry-run option may be useful for validating the

command-line options such as the module system configuration.

--validate-modules

validate all modules and exit

The --validate-modules option may be useful for finding

conflicts and other errors with modules on the module path.

-D<name>=<value>

set a system property

-verbose:[class|module|gc|jni]

enable verbose output for the given subsystem

-version print product version to the error stream and exit

--version print product version to the output stream and exit

-showversion print product version to the error stream and continue

--show-version

print product version to the output stream and continue

--show-module-resolution

show module resolution output during startup

-? -h -help

print this help message to the error stream

--help print this help message to the output stream

-X print help on extra options to the error stream

--help-extra print help on extra options to the output stream

-ea[:<packagename>...|:<classname>]

-enableassertions[:<packagename>...|:<classname>]

enable assertions with specified granularity

-da[:<packagename>...|:<classname>]

-disableassertions[:<packagename>...|:<classname>]

disable assertions with specified granularity

-esa | -enablesystemassertions

enable system assertions

-dsa | -disablesystemassertions

disable system assertions

-agentlib:<libname>[=<options>]

load native agent library <libname>, e.g. -agentlib:jdwp

see also -agentlib:jdwp=help

-agentpath:<pathname>[=<options>]

load native agent library by full pathname

-javaagent:<jarpath>[=<options>]

load Java programming language agent, see java.lang.instrument

-splash:<imagepath>

show splash screen with specified image

HiDPI scaled images are automatically supported and used

if available. The unscaled image filename, e.g. image.ext,

should always be passed as the argument to the -splash option.

The most appropriate scaled image provided will be picked up

automatically.

See the SplashScreen API documentation for more information

@argument files

one or more argument files containing options

--disable-@files

prevent further argument file expansion

--enable-preview

allow classes to depend on preview features of this release

To specify an argument for a long option, you can use --<name>=<value> or

--<name> <value>.

gradle 버전을 8.5로 낮춘 뒤 다시 시도해 보시겠어요?
https://www.inflearn.com/questions/1251256/comment/336001