When the JVM is running in a browser (like Internet Explorer or FireFox), the Java code (usually. In most cases where a security policy is in effect, these rules prevent the Java code from reading from or writing to the hard drive, and from opening network connections. The sandbox is a set of rules that apply to all Java code running in the JVM. In addition to lending portability, the JVM can enhance security by establishing a runtime security sandbox. This gives Java byte code the ability to “run anywhere”-anywhere there is a JVM, that is. We have already explored the JVM and seen that it is the interface between the compiled Java byte code and the particular machine hardware and operating system where it is running.
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