如何在 Oracle 官网找到Java语言/虚拟机规范文档

进入 Oracle 官网 https://www.oracle.com/

选择 Support/Documentation，进入到 https://docs.oracle.com/en/

点击 Java，进入到 https://docs.oracle.com/en/java/index.html

点击 Java SE Licensing Information，进入到 https://www.oracle.com/java/technologies/javase-documentation.html

点击 Overview，进入到 https://www.oracle.com/java/technologies/java-se-glance.html，当然了，这里也可以直接点击 Downloads 然后跳过下面的一步

点击 Java Platform, Standard Edition 8，进入到 https://www.oracle.com/java/technologies/javase-downloads.html#JDK8

点击 Documentation，进入到 https://docs.oracle.com/javase/8/

点击 Java Language and Virtual Manchine Specifications，进入到 https://docs.oracle.com/javase/specs/index.html

找到 Java SE 8，比如这里点击 HTML，进入到 https://docs.oracle.com/javase/specs/jvms/se8/html/index.html

然后点击对应的章节内容就可以查看了，比如要查看 class 文件格式，点击，进入到 https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-2.html#jvms-2.1