Make compatible with Java 17

Author: estebanpw

README.md

@@ -33,16 +33,18 @@ To add a dependency on `index4j` using Maven, use the following:
 <dependency>
     <groupId>com.dynatrace.index4j</groupId>
     <artifactId>indices</artifactId>
-    <version>0.2.0</version>
+    <version>0.3.0</version>
 </dependency>
 ```
 
 To add the dependency using Gradle:
 
 ```
-implementation group: 'com.dynatrace.index4j', name: 'indices', version: '0.2.0'
+implementation group: 'com.dynatrace.index4j', name: 'indices', version: '0.3.0'
 ```
 
+The current minimum Java version should be 17.
+
 ## Supported data structures
 
 - [Fm-Index](indices/src/main/java/com/dynatrace/fm/FmIndex.java): supports `count`, `locate`, `extract` and `extractUntilBoundary` (along with its left and right variations) with arbitrary patterns while compressing your data. In the case of logs, roughly 20% of the input size is required to store both data and index.

gradle.properties

@@ -1,2 +1,2 @@
-version=0.1.0
+version=0.3.0
 org.gradle.jvmargs='-Djdk.attach.allowAttachSelf'

indices/build.gradle

@@ -105,7 +105,7 @@ test {
 
 java {
 	toolchain {
-		languageVersion.set(JavaLanguageVersion.of(21))
+		languageVersion.set(JavaLanguageVersion.of(17))
 	}
 	withSourcesJar()
 	withJavadocJar()
@@ -121,7 +121,7 @@ javadoc {
 }
 
 group = 'com.dynatrace.index4j'
-version = '0.2.0'
+version = '0.3.0'
 
 gradlePlugin { automatedPublishing = false }