Output to standard output and standard error; and input from standard input.

  

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class InputOutputDemoStandardInputOutput {

  public static void main(String[] a) throws Exception {

    //Write characters to standard output and standard error:
    System.out.println("std output");
    System.err.println("std error");
    //Read characters from standard input (the keyboard):
    System.out.print("Type some characters and press Enter: ");
    BufferedReader bisr = new BufferedReader(new InputStreamReader(
        System.in));
    String response = bisr.readLine();
    System.out.println("You typed: '" + response + "'");
    //Read a byte from standard input (the keyboard):
    System.out.print("Type one character and press Enter: ");
    byte b = (byte) System.in.read();
    System.out.println("First byte of your input is: " + b);
  }
}

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Output to standard output and standard error; and input from standard input. : Console « Development Class « Java

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