英文版 j2se.chm 与jdk6API相比,做了不少改动 Java Platform Standard Edition 7 Documentation JDK 7 is a superset of JRE 7, and contains everything that is in JRE 7, plus tools such as the compilers and debuggers necessary for developing applets and applications. JRE 7 provides the libraries, the Java Virtual Machine (JVM), and other components to run applets and applications written in the Java programming language