JEP 474: ZGC: Generational Mode by Default

Author: ibrahimatay

README.md

@@ -14,6 +14,7 @@ This repository contains Java examples that are designed to track and document t
   * [JEP 467](java-23/src/main/java/com/ibrahimatay/JEP467MarkdownDocumentationComments.java): Markdown Documentation Comments
   * [JEP 455](java-23/src/main/java/com/ibrahimatay/JEP455PrimitiveTypesInPatternsInstanceofAndSwitch.java): Primitive Types in Patterns, instanceof, and switch]
   * [JEP 476](java-23/src/main/java/com/ibrahimatay/JEP476ModuleImportDeclarations.java): Module Import Declarations]
+  * [JEP 474](java-23/src/main/java/com/ibrahimatay/JEP474ZGCGenerationalModeByDefault.sh): ZGC: Generational Mode by Default
 
 * [Java 22](java-22/) (March, 2024)
   * [JEP 458](java-22/src/main/java/com/ibrahimatay/JEP458LaunchMultiFileSourceCode.java): Launch Multi-File Source-Code Programs

java-23/src/main/java/com/ibrahimatay/JEP474ZGCGenerationalModeByDefault.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/bash
+
+# JEP 474: ZGC: Generational Mode by Default
+# https://openjdk.org/jeps/474
+
+# Openjdk pull request
+# https://github.com/openjdk/jdk/pull/18393
+
+# JEP 474: Generational Mode Now Standard for ZGC in Java
+# https://www.infoq.com/news/2024/05/java-zgc-update/
+
+# https://www.reddit.com/r/programming/comments/9bhltd/javas_new_z_garbage_collector_zgc_is_very_exciting/
+
+# Java's new Z Garbage Collector (ZGC) is very exciting
+# https://www.opsian.com/blog/javas-new-zgc-is-very-exciting/
+
+# Maybe it will come in handy: https://chriswhocodes.com/vm-options-explorer.html
+
+# -XX:+UseZGC -XX: => Refuse to start with error message
+# -XX:+UseZGC -XX:-ZGenerational -XX: => Same as above
+# -XX:+UseZGC -XX:-ZGenerational -XX: => Start (with message about deprecation of non-generational ZGC)
+
+# java -XX:+UseZGC -Xmx4G -Xms4G -jar Main.jar
+# java -XX:+UseZGC -XX:-ZGenerational -Xmx4G -Xms4G -jar Main.jar

java-23/src/main/java/com/ibrahimatay/Main.java

@@ -0,0 +1,10 @@
+package com.ibrahimatay;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.printf("Hello and welcome!");
+        for (int i = 1; i <= 1_000_000; i++) {
+            System.out.printf("İ = %21s%n", i);
+        }
+    }
+}