About System.in.read ()? ? ? ? ?

wongzhe

How to understand that the return type of this method is integer? ?
  I always think it should be a String. Please help me explain it

kider11

(char) System.in.read ()

Just convert the integer to a character

lrever

This method returns not the data content read by READ (), but the number of bytes read. Note that the READ () return type is different in each class in the IO package!

lrever

Specific can see API documentation

nanase

it depends on the return type not by the sense.

madcat1

System.in is an InputStream, which means that it is performed in bytes. When the method read () is called, of course, it is read byte by byte, naturally it is char

madcat1

It is an ACSII, so it must be converted to char

jk12879sm

Do not use System.in's read method directly. . .

Any book will tell you, don't do it!