package edu.princeton.cs.introcs;
/*************************************************************************
* Compilation: javac Out.java
* Execution: java Out
*
* Writes data of various types to: stdout, file, or socket.
*
*************************************************************************/
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Locale;
/**
* This class provides methods for writing strings and numbers to
* various output streams, including standard output, file, and sockets.
* <p>
* For additional documentation, see
* <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
* <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
* by Robert Sedgewick and Kevin Wayne.
*
* @author Robert Sedgewick
* @author Kevin Wayne
*/
public class Out {
// force Unicode UTF-8 encoding; otherwise it's system dependent
private static final String CHARSET_NAME = "UTF-8";
// assume language = English, country = US for consistency with In
private static final Locale LOCALE = Locale.US;
private PrintWriter out;
/**
* Create an Out object using an OutputStream.
*/
public Out(OutputStream os) {
try {
OutputStreamWriter osw = new OutputStreamWriter(os, CHARSET_NAME);
out = new PrintWriter(osw, true);
}
catch (IOException e) { e.printStackTrace(); }
}
/**
* Create an Out object using standard output.
*/
public Out() { this(System.out); }
/**
* Create an Out object using a Socket.
*/
public Out(Socket socket) {
try {
OutputStream os = socket.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, CHARSET_NAME);
out = new PrintWriter(osw, true);
}
catch (IOException e) { e.printStackTrace(); }
}
/**
* Create an Out object using a file specified by the given name.
*/
public Out(String s) {
try {
OutputStream os = new FileOutputStream(s);
OutputStreamWriter osw = new OutputStreamWriter(os, CHARSET_NAME);
out = new PrintWriter(osw, true);
}
catch (IOException e) { e.printStackTrace(); }
}
/**
* Close the output stream.
*/
public void close() { out.close(); }
/**
* Terminate the line.
*/
public void println() {
out.println();
}
/**
* Print an object and then terminate the line.
*/
public void println(Object x) {
out.println(x);
}
/**
* Print a boolean and then terminate the line.
*/
public void println(boolean x) {
out.println(x);
}
/**
* Print a char and then terminate the line.
*/
public void println(char x) {
out.println(x);
}
/**
* Print an double and then terminate the line.
*/
public void println(double x) {
out.println(x);
}
/**
* Print a float and then terminate the line.
*/
public void println(float x) {
out.println(x);
}
/**
* Print an int and then terminate the line.
*/
public void println(int x) {
out.println(x);
}
/**
* Print a long and then terminate the line.
*/
public void println(long x) {
out.println(x);
}
/**
* Print a byte and then terminate the line.
*/
public void println(byte x) {
out.println(x);
}
/**
* Flush the output stream.
*/
public void print() {
out.flush();
}
/**
* Print an object and then flush the output stream.
*/
public void print(Object x) {
out.print(x);
out.flush();
}
/**
* Print an boolean and then flush the output stream.
*/
public void print(boolean x) {
out.print(x);
out.flush();
}
/**
* Print an char and then flush the output stream.
*/
public void print(char x) {
out.print(x);
out.flush();
}
/**
* Print an double and then flush the output stream.
*/
public void print(double x) {
out.print(x);
out.flush();
}
/**
* Print a float and then flush the output stream.
*/
public void print(float x) {
out.print(x);
out.flush();
}
/**
* Print an int and then flush the output stream.
*/
public void print(int x) {
out.print(x);
out.flush();
}
/**
* Print a long and then flush the output stream.
*/
public void print(long x) {
out.print(x);
out.flush();
}
/**
* Print a byte and then flush the output stream.
*/
public void print(byte x) {
out.print(x);
out.flush();
}
/**
* Print a formatted string using the specified format string and arguments,
* and then flush the output stream.
*/
public void printf(String format, Object... args) {
out.printf(LOCALE, format, args);
out.flush();
}
/**
* Print a formatted string using the specified locale, format string and arguments,
* and then flush the output stream.
*/
public void printf(Locale locale, String format, Object... args) {
out.printf(locale, format, args);
out.flush();
}
/**
* A test client.
*/
public static void main(String[] args) {
Out out;
// write to stdout
out = new Out();
out.println("Test 1");
out.close();
// write to a file
out = new Out("test.txt");
out.println("Test 2");
out.close();
}
}
/*************************************************************************
* Copyright 2002-2012, Robert Sedgewick and Kevin Wayne.
*
* This file is part of stdlib-package.jar, which accompanies the textbook
*
* Introduction to Programming in Java: An Interdisciplinary Approach
* by R. Sedgewick and K. Wayne, Addison-Wesley, 2007. ISBN 0-321-49805-4.
*
* http://introcs.cs.princeton.edu
*
*
* stdlib-package.jar is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* stdlib-package.jar is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with stdlib-package.jar. If not, see http://www.gnu.org/licenses.
*************************************************************************/