Javase 77th Session

1, InetAddress

InetAddress is the wrapper class for the address, which can also be used to obtain the current operating address
(1) Get the IP address of the computer's current Internet

(2) connection operation with server

(3)

Second, MD5 encrypted files

Example of file local second-pass operation

MD5
MD5 is an irreversible encryption, cannot be restored after encryption, can add no solution. After MD5 encryption the same file encryption key is the same. So before uploading, the first operation of the encryption of the key, to see if there is no server, some words do not need to upload to the server, can be directly transmitted in seconds.
MD5 Encrypted transmission


Client

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Javase 77th Session