Create static, non-constant member of non-static inner class

Author: Nicolai Parlog

README.md

@@ -74,6 +74,7 @@ Check out the [jpms](http://blog.codefx.org/tag/jpms/) tag on my blog, [this dem
 
 * ⑰ [sealed classes](src/main/java/org/codefx/demo/java17/lang/sealed) (articles [1](https://www.infoq.com/articles/java-sealed-classes/), [2](https://nipafx.dev/java-visitor-pattern-pointless/), [JEP 409](https://openjdk.java.net/jeps/409))
 * ⑯ [`instanceof` pattern matching](src/main/java/org/codefx/demo/java16/lang/instanceof_) (articles [1](https://nipafx.dev/java-pattern-matching/), [2](https://nipafx.dev/java-type-pattern-matching/), [JEP 394](https://openjdk.java.net/jeps/394))
+* ⑯ [static members of (non-static) inner classes](src/main/java/org/codefx/demo/java16/lang/staticinner) ([JDK-8254105](https://bugs.openjdk.java.net/browse/JDK-8254105))
 * ⑮ [text blocks](src/main/java/org/codefx/demo/java15/lang/text_blocks/TextBlocks.java) ([article](https://blog.codefx.org/java/text-blocks), [JEP 378](https://openjdk.java.net/jeps/378))
 * ⑭ [switch expressions](src/main/java/org/codefx/demo/java14/lang/switch_/Switch.java) ([article](https://blog.codefx.org/java/switch-expressions/), [video](https://www.youtube.com/watch?v=1znHEf3oSNI), [JEP 361](https://openjdk.java.net/jeps/361))
 * ⑩ [local-variable type inference with `var`](src/main/java/org/codefx/demo/java10/lang/var/VariableTypeInference.java) ([article](http://blog.codefx.org/java/java-10-var-type-inference/), [video](https://www.youtube.com/watch?v=Le1DbpRZdRQ), [JEP 286](http://openjdk.java.net/jeps/286))

src/main/java/org/codefx/demo/java16/lang/staticinner/OuterClass.java

@@ -0,0 +1,25 @@
+package org.codefx.demo.java16.lang.staticinner;
+
+import java.time.LocalDateTime;
+
+public class OuterClass {
+
+	// TODO
+
+	public static void main(String[] args) {
+		System.out.println("foo");
+	}
+
+	public class InnerClass {
+
+		static final String DATE = LocalDateTime.now().toString();
+
+		static String date() {
+			return DATE;
+		}
+
+		record InnerRecord(String component) { }
+
+	}
+
+}