/*********************************************************************************
* This program uses the Keyboard as the input device to accept data from the *
* MS-DOS prompt (console). It gets a character from the keyboard, and prints the *
* ASCII value of the character inputted as well as the character itself. *
*********************************************************************************/
import java.io.*; //for IOException & read() throws and java.io.IOException
public class TestKeyboardIO1 {
public static void main(String[] args) throws IOException {
System.out.println("Type in a character and press ENTER.");
System.out.println("------------------------------------");
// reads a byte from the keyboard Buffer.
// Returns an int.
int data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
System.out.println("Type in a character and press ENTER.");
System.out.println("------------------------------------");
int data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
System.out.println("Type in a character and press ENTER.");
System.out.println("------------------------------------");
int data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
System.in.skip(System.in.available()); // empty the inputstream
data = System.in.read();
System.out.println("ASCII : " + data);
System.out.println("Character : " + (char) data);
byte[] buffer = new byte[10];
int bytesRead = System.in.read(buffer);
System.out.println("Actual bytes read: " + bytesRead);
//System.out.println(buffer);// invalid usage
for (int i = 0; i < buffer.length; i++) {
System.out.println(buffer[i] + " " + (char) buffer[i]);
}
System.out.println("Converted to string: " +
new String(buffer));
byte[] buffer = new byte[10];
//System.in.read(buffer, 0, 5);
System.in.read(buffer, 2, 6);
for (int i = 0; i < buffer.length; i++) {
System.out.println(buffer[i] + " " +
(char) buffer[i]);
}
System.out.println(new String(buffer));
byte b[] = "Hello World".getBytes();
for (int i = 0; i < b.length; i++)
System.out.println(b[i] + " " + (char) b[i]);
System.out.println(System.in.getClass().getName()); // java.io.BufferedInputStream
System.out.println(System.out.getClass().getName()); // java.io.PrintStream
}
}
/********************************************************************************
* This program uses the Keyboard as the input device to accept data from the *
* MS-DOS prompt (console). It gets a string from the keyboard and prints it. *
********************************************************************************/
import java.io.*; //for IOException, InputStream, InputStreamReader, BufferedReader
public class TestKeyboardIO2 {
public static void main(String args[]) throws IOException {
/* converting from byte stream (InputStream subclass) to character stream (Reader subclass)*/
InputStreamReader in_stream_reader =
new InputStreamReader(System.in);
/* converting from Reader subclass (in_stream_reader) to a BufferedReader object*/
BufferedReader buf_reader =
new BufferedReader(in_stream_reader);
BufferedReader buf_reader = new BufferedReader(
new InputStreamReader(System.in));
System.out.println("Type in a sentence and press ENTER to terminate.");
System.out.println("------------------------------------------------");
String data1 = buf_reader.readLine(); // method to read a line.
//String data1 = new BufferedReader(
// new InputStreamReader(System.in)).readLine();
System.out.println();
System.out.println("Type in a sentence and press ENTER to terminate.");
System.out.println("------------------------------------------------");
String data2 = buf_reader.readLine(); // method to read a line.
//String data2 = new BufferedReader(
// new InputStreamReader(System.in)).readLine();
System.out.println();
System.out.println("1st sentence: " + data1);
System.out.println("2nd sentence: " + data2);
}
}