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How to convert a string obtained from an input stream into an integer in java?
Hello, you have changed your BufferedReader br = ... Make a sentence with ...

Scanner? sc? =? New? Scanner (system. in); Scanner is a tool class provided by java, which is particularly easy to use. For example, you need to enter an integer:

int order = sc . nextint();

Just do it, you don't need to convert it yourself.