How does Java guarantee that the code you write is safe and reliable?
(1): The first pass: write the code first to be compiled into class files, if the code is written with a problem, compile the time will be found, and then prompted a compilation error, can not compile through.
(2): The second pass: After the compilation, in the class loading, will also carry out class loading check, the class and network resources on the computer separation, in the class when the check, so you can limit any "Trojan" application.
(3): The third: After the class loaded, before running, but also the bytecode check, to determine your program is safe.
(4): Fourth: If your program runs on the network, and the Sandbox (Sand box) protection, what is the sandbox? That is, if your program is not authorized and can only be run within the scope of the sandbox, it is not possible to access local resources, thus ensuring security.
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