What does System.in.read actually return?

Question

What does :

System.in.read()

return ? The documentation says :

Returns: the next byte of data, or -1 if the end of the

Answer 1

System.in.read() reads just one byte.

49 is the Unicode point value for 1.

Try to print:

System.out.println((char)49);

This will help you to understand it more.