30 years of Java
summary
Java arrives in 1995 as a language plus JVM promising write once run anywhere and automatic memory management; an early 0.9 app spawns Jetty from Java 0.9 and proves server-side viability. Key milestones: RMI, JDBC, reflection, and invokeDynamic (Java 7) enabling dynamic languages and later lambdas; the C2 just‑in‑time compiler makes Java competitive with C++ (C2 JIT in 1.3). Recent wins are virtual threads and ZGC in Java 21 with sub‑millisecond pauses; Project Valhalla, Lilliput, and Laden target value types, smaller headers, and instant startup.
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chapters (12)
- 0:00Introduction
- 1:51Java in 1995
- 3:40Memory management and libraries
- 5:04Threads and applets
- 6:51Jetty and server-side
- 7:59Early performance issues
- 10:11Cliff Click’s compiler
- 11:41HotSpot JVM
- 13:06Generics and annotations
- 14:56InvokeDynamic
- 16:02Virtual threads and ZGC
- 18:14Backward compatibility
