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dunke0921

char ch2 = 0;
try {
ch2 = (char) System.in.read ();
System.in.skip (2);
} catch (IOException z) {
}
What's the use of calling the sKip method here? English api description can't understand

zzzdsd

Skips over and discards n bytes of data from this input stream
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Skip from this stream and discard N bytes of data

for example:
 
 char ch2 = (char) System.in.read ();
 System.in.skip (2);
 ch2 = (char) System.in.read ();
 ch2 = (char) System.in.read ();
 System.out.println (ch2);

Enter 12345 and press Enter
The result is 5

bfbf7878

System.in returns InputStream and then its skip method
public long skip (long n)
          throws IOException skips and discards n data bytes in this input stream. For various reasons, the skip method ends after skipping some smaller number of bytes (possibly 0). This can be caused by several conditions; reaching the end of the file before n bytes are skipped is just one of them. Returns the actual number of bytes skipped. If n is negative, no bytes are skipped.
The skip method of InputStream creates a byte array and then reads into it repeatedly until n bytes have been read or the end of the stream has been reached. It is recommended that subclasses provide a more efficient implementation of this method.


parameter:
n-the number of bytes to skip.
return:
The actual number of bytes skipped.
Throws:
IOException-if an I / O error occurs.

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