Remove remnants of Java 8 compatibility from User Guide (#5066)

Resolves #5061.

Author: arukiidou

documentation/src/docs/asciidoc/link-attributes.adoc

@@ -251,7 +251,7 @@ endif::[]
 :Log4j:                                      https://logging.apache.org/log4j/2.x/[Log4j]
 :Log4j_JDK_Logging_Adapter:                  https://logging.apache.org/log4j/2.x/log4j-jul/index.html[Log4j JDK Logging Adapter]
 :Logback:                                    https://logback.qos.ch/[Logback]
-:LogManager:                                 https://docs.oracle.com/javase/8/docs/api/java/util/logging/LogManager.html[LogManager]
+:LogManager:                                 https://docs.oracle.com/en/java/javase/17/docs/api/java.logging/java/util/logging/LogManager.html[LogManager]
 :Maven_Central:                              https://central.sonatype.com/[Maven Central]
 :MockitoExtension:                           https://github.com/mockito/mockito/blob/release/2.x/subprojects/junit-jupiter/src/main/java/org/mockito/junit/jupiter/MockitoExtension.java[MockitoExtension]
 :ServiceLoader:                              {jdk-javadoc-base-url}/java.base/java/util/ServiceLoader.html[ServiceLoader]

documentation/src/docs/asciidoc/release-notes/release-notes-6.0.1.adoc

@@ -16,7 +16,7 @@ repository on GitHub.
 [[release-notes-6.0.1-junit-platform-bug-fixes]]
 ==== Bug Fixes
 
-* ❓
+* Remove remnants of Java 8 compatibility from User Guide.
 
 [[release-notes-6.0.1-junit-platform-deprecations-and-breaking-changes]]
 ==== Deprecations and Breaking Changes

documentation/src/docs/asciidoc/user-guide/running-tests.adoc

@@ -1124,7 +1124,7 @@ option.
 Please consult the manual of your build tool for the appropriate commands.
 
 To analyze the recorded events, use the
-https://docs.oracle.com/en/java/javase/14/docs/specs/man/jfr.html[jfr]
+https://docs.oracle.com/en/java/javase/17/docs/specs/man/jfr.html[jfr]
 command line tool shipped with recent JDKs or open the recording file with
 https://jdk.java.net/jmc/[JDK Mission Control].
 

documentation/src/docs/asciidoc/user-guide/writing-tests.adoc

@@ -1749,9 +1749,8 @@ test class.
 include::{testDir}/example/ParameterizedClassDemo.java[tags=constructor_injection]
 ----
 
-If your programming language level you are using supports _records_ -- for example, Java
-16 or higher -- you may use them to implement parameterized classes that avoid the
-boilerplate code of declaring a test class constructor.
+You may use _records_ to implement parameterized classes that avoid the boilerplate code
+of declaring a test class constructor.
 
 [source,java,indent=0]
 ----
@@ -2237,11 +2236,12 @@ by default. This behavior can be changed by setting the
 | `@CsvSource(value = { " apple , banana" }, ignoreLeadingAndTrailingWhitespace = false)` | `" apple "`, `" banana"`
 |===
 
-If the programming language you are using supports _text blocks_ -- for example, Java SE
-15 or higher -- you can alternatively use the `textBlock` attribute of `@CsvSource`. Each
-record within a text block represents a CSV record and results in one invocation of the
-parameterized class or test. The first record may optionally be used to supply CSV headers
-by setting the `useHeadersInDisplayName` attribute to `true` as in the example below.
+If the programming language you are using supports Java _text blocks_  or equivalent
+multi-line string literals, you can alternatively use the `textBlock` attribute of
+`@CsvSource`. Each record within a text block represents a CSV record and results in one
+invocation of the parameterized class or test. The first record may optionally be used to
+supply CSV headers by setting the `useHeadersInDisplayName` attribute to `true` as in the
+example below.
 
 Using a text block, the previous example can be implemented as follows.
 
@@ -2304,7 +2304,7 @@ void testWithCsvSource(String fruit, int rank) {
 
 [NOTE]
 ====
-Java's https://docs.oracle.com/en/java/javase/15/text-blocks/index.html[text block]
+Java's https://docs.oracle.com/en/java/javase/17/text-blocks/index.html[text block]
 feature automatically removes _incidental whitespace_ when the code is compiled.
 However other JVM languages such as Groovy and Kotlin do not. Thus, if you are using a
 programming language other than Java and your text block contains comments or new lines

junit-jupiter-params/src/main/java/org/junit/jupiter/params/provider/CsvSource.java

@@ -134,7 +134,7 @@
 	 * via this attribute or the {@link #value} attribute.
 	 *
 	 * <p>Text block syntax is supported by various languages on the JVM
-	 * including Java SE 15 or higher. If text blocks are not supported, you
+	 * including Java SE. If text blocks are not supported, you
 	 * should declare your CSV content via the {@link #value} attribute.
 	 *
 	 * <p>Each record in the text block corresponds to a record in a CSV file and will
@@ -154,7 +154,7 @@
 	 * input or on the following line, vertically aligned with the rest of the
 	 * input (as can be seen in the example below).
 	 *
-	 * <p>Java's <a href="https://docs.oracle.com/en/java/javase/15/text-blocks/index.html">text block</a>
+	 * <p>Java's <a href="https://docs.oracle.com/en/java/javase/17/text-blocks/index.html">text block</a>
 	 * feature automatically removes <em>incidental whitespace</em> when the code
 	 * is compiled. However, other JVM languages such as Groovy and Kotlin do not.
 	 * Thus, if you are using a programming language other than Java and your text

junit-platform-commons/src/main/java/org/junit/platform/commons/util/StringUtils.java

@@ -46,7 +46,7 @@ public final class StringUtils {
 	 * @see <a href="https://github.com/junit-team/junit-framework/issues/1800">#1800</a>
 	 */
 	static Pattern compileIsoControlPattern() {
-		// https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html#posix
+		// https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/regex/Pattern.html#posix
 		try {
 			// All of the characters that Unicode refers to as 'control characters'
 			return Pattern.compile("\\p{Cntrl}", UNICODE_CHARACTER_CLASS);