Java string interception example details

Java string interception example details

subject

In Java, the length of the string "ABCD" is the same as that of the string "ab hello", both of which are four characters.

However, the corresponding number of bytes is different. One Chinese character accounts for two bytes.

Define a method to get a substring according to the specified number of bytes.

For example, for "ab hello", if you take three bytes, then the substring is half of AB and "you", then the half will be discarded.

If you take four bytes, it is "ab you", and if you take five bytes, it is still "ab you".

Only GBK and UTF-8 codes are considered

Example code:

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