JDK 1.0 shipped the compiler, JVMJava Virtual Machine — executes Java bytecode and hosts Kotlin, Scala, Clojure, and other JVM languages., and libraries developers needed to build and run JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. programs — applets in browsers, standalone tools, and early server apps. You wrote `.java` files, compiled to bytecodeIntermediate instructions produced by compilers — often executed by a virtual machine rather than the CPU directly., and ran them anywhere with a JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data. runtime installed.

The May 1995 announcement created hype; JDK 1.0 was when developers could actually build with JavaA portable language running on the JVM — dominant in enterprise servers, Android, and big data..

It shipped the compiler, JVMJava Virtual Machine — executes Java bytecode and hosts Kotlin, Scala, Clojure, and other JVM languages., applet viewer, and class libraries as a cohesive platform.