先确认 java 版本，然后执行 gradle init ，过程中一路回车，直到需要输入 java 版本时根据之前查看的版本进行输入，然后接着一路回车到底，最后执行 gradle build 进行编译，再执行 gradle run 运行程序。
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~/ts/MyApplication $ java -version
openjdk version "17-internal" 2021-09-14
OpenJDK Runtime Environment (build 17-internal+0-adhoc..src)
OpenJDK 64-Bit Server VM (build 17-internal+0-adhoc..src, mixed mode)
~/ts/MyApplication $ gradle init
Select type of build to generate:
1: Application
2: Library
3: Gradle plugin
4: Basic (build structure only)
Enter selection (default: Application) [1..4]
Select implementation language:
1: Java
2: Kotlin
3: Groovy
4: Scala
5: C++
6: Swift
Enter selection (default: Java) [1..6]
Enter target Java version (min: 7, default: 21): 17
Project name (default: MyApplication):
Select application structure:
1: Single application project
2: Application and library project
Enter selection (default: Single application project) [1..2]
Select build script DSL:
1: Kotlin
2: Groovy
Enter selection (default: Kotlin) [1..2]
Select test framework:
1: JUnit 4
2: TestNG
3: Spock
4: JUnit Jupiter
Enter selection (default: JUnit Jupiter) [1..4]
Generate build using new APIs and behavior (some features may change in the next minor release)? (default: no) [yes, no]
> Task :init
Learn more about Gradle by exploring our Samples at https://docs.gradle.org/8.10.2/samples/sample_building_java_applications.html
BUILD SUCCESSFUL in 17s
1 actionable task: 1 executed
~/ts/MyApplication $ tree
.
├── app
│ ├── build.gradle.kts
│ └── src
│ ├── main
│ │ ├── java
│ │ │ └── org
│ │ │ └── example
│ │ │ └── App.java
│ │ └── resources
│ └── test
│ ├── java
│ │ └── org
│ │ └── example
│ │ └── AppTest.java
│ └── resources
├── gradle
│ ├── libs.versions.toml
│ └── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle.kts
15 directories, 9 files
~/ts/MyApplication $ gradle build
> Task :app:compileJava
> Task :app:processResources NO-SOURCE
> Task :app:classes
> Task :app:jar
> Task :app:startScripts
> Task :app:distTar
> Task :app:distZip
> Task :app:assemble
> Task :app:compileTestJava
> Task :app:processTestResources NO-SOURCE
> Task :app:testClasses
> Task :app:test
> Task :app:check
> Task :app:build
BUILD SUCCESSFUL in 2s
7 actionable tasks: 7 executed
~/ts/MyApplication $ gradle run
> Task :app:compileJava UP-TO-DATE
> Task :app:processResources NO-SOURCE
> Task :app:classes UP-TO-DATE
> Task :app:run
Hello World!
BUILD SUCCESSFUL in 1s
2 actionable tasks: 1 executed, 1 up-to-date
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