upgrade java 8 -> 17

Author: TommyLemon

pom.xml

@@ -14,7 +14,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
+		<java.version>17</java.version>
 		<maven.compiler.encoding>UTF-8</maven.compiler.encoding>
 	</properties>
 
@@ -60,8 +60,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.12.1</version>
 				<configuration>
-					<source>1.8</source>
-					<target>1.8</target>
+					<source>17</source>
+					<target>17</target>
 				</configuration>
 			</plugin>
 		</plugins>