This article explains why the StringJoiner class was introduced as a more flexible alternative to StringBuilder, details its internal fields, constructors, and core methods such as add, merge, toString, length, and setEmptyValue, and demonstrates their behavior with concrete Java code examples.
This article provides a comprehensive overview of Java's Random class, describing its constructor, implemented interfaces, direct subclasses, and detailed explanations of all public methods—including setSeed, next, nextBytes, nextInt, nextLong, nextBoolean, nextFloat, nextDouble, and nextGaussian—along with the underlying linear‑congruential algorithm and code examples.
This article summarizes the major JDK 11‑13 updates, including switch expression simplifications, multi‑line text block literals, dynamic AppCDS archives, ZGC memory‑release enhancements, a modernized socket API, new FileSystems methods, bulk NIO ByteBuffer operations, the Reiwa era in java.time, Unicode 12.1 support, and several deprecated features that have been removed.
