StreamConverter.java Source code

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Here is the source code for StreamConverter.java

Source

/* From http://java.sun.com/docs/books/tutorial/index.html */
/*
 * Copyright (c) 1995-1998 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for NON-COMMERCIAL purposes and without fee is hereby granted
 * provided that this copyright notice appears in all copies. Please refer to
 * the file "copyright.html" for further important copyright and licensing
 * information.
 * 
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
 * NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
 * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES.
 */

import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Insets;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;

public class StreamConverter {

    static void writeOutput(String str) {

        try {
            FileOutputStream fos = new FileOutputStream("test.txt");
            Writer out = new OutputStreamWriter(fos, "UTF8");
            out.write(str);
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    static String readInput() {

        StringBuffer buffer = new StringBuffer();
        try {
            FileInputStream fis = new FileInputStream("test.txt");
            InputStreamReader isr = new InputStreamReader(fis, "UTF8");
            Reader in = new BufferedReader(isr);
            int ch;
            while ((ch = in.read()) > -1) {
                buffer.append((char) ch);
            }
            in.close();
            return buffer.toString();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {

        String jaString = new String("\u65e5\u672c\u8a9e\u6587\u5b57\u5217");

        writeOutput(jaString);
        String inputString = readInput();
        String displayString = jaString + " " + inputString;
        new ShowString(displayString, "Conversion Demo");
    }

}

class ShowString extends Frame {

    FontMetrics fontM;

    String outString;

    ShowString(String target, String title) {

        setTitle(title);
        outString = target;

        Font font = new Font("Monospaced", Font.PLAIN, 36);
        fontM = getFontMetrics(font);
        setFont(font);

        int size = 0;
        for (int i = 0; i < outString.length(); i++) {
            size += fontM.charWidth(outString.charAt(i));
        }
        size += 24;

        setSize(size, fontM.getHeight() + 60);
        setLocation(getSize().width / 2, getSize().height / 2);
        show();
    }

    public void paint(Graphics g) {
        Insets insets = getInsets();
        int x = insets.left;
        int y = insets.top;
        g.drawString(outString, x + 6, y + fontM.getAscent() + 14);
    }
}