Execution failed for task ':HelloSpringApplication.main()'. > Build cancelled while executing task ':HelloSpringApplication.main()' * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. 1. preference 들어가서 build tools> gradle에서 build and run using run test using 을 인텔리제이로 바꿔준다 해결 안되면 2. 자바 JDK 다시깔기 https://www.inflearn.com/questions/116973