関連ワード:  spring boot with java 1.8    spring boot with java 8    spring boot with java 8 example    spring boot with java 8 features    spring boot compatible with java 1.8    spring boot version with java 1.8    spring boot 3 with java 1.8    spring boot java 1.8 example    spring boot version compatible with java 1.8    spring boot initializr java 1.8