Mutual conversion method between Java binary data and hexadecimal string

The general input formats of binary data are 0x45, 0x3a and 0xc3. This data format looks like a hexadecimal string, but actually each corresponds to a byte when stored. For example, the binary byte of 0x45 is 0100 0101, and the corresponding hexadecimal string is 0x45. In the actual programming process, we often encounter the mutual transformation of these two formats. Record the code here.

Convert binary data into hexadecimal string (add ':' and ';' in the middle to view the subscript, or remove it by yourself):

Convert hexadecimal string to binary data:

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