Standard I/O with System Class Example

// ... reading characters from the keyboard ...
	try 
	{ 	// IOException is possible
 
		// Input bytes from the keyboard and print to the terminal

		for(int aByte = 0; ( aByte = System.in.read() ) != -1 ; )
			System.out.print((char)aByte); 

	} 
	catch (IOException ioe) 
	{
		// print the exception onto the err stream

		System.err.println("Reading from the keyboard error:" + ioe);
	}

// SysRead
 
import java.io.*;
/**
 * Example of reading String and integer from the keyboard
 * using System.in stream
 * @@author Jeff Zhuk
 */
public class SysRead {
    public static void main(String[] args) {
        // invitation to enter a number
        System.out.println("Please enter an integer number:");
 
        // get the number
        String inputString = null;
        int number = 0;
        try {
            BufferedInputStream in = new BufferedInputStream(System.in);
            inputString = new String( in.read() ); // bytes > String
            in.close();
            number = Integer.parseInt(inputString);
        } catch(Exception e) {
            System.out.println("Exception: " + e);
            System.exit(0);
        }
        System.out.println("Thank you for the right input: " + number);
    }
}
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