Replacing non-ASCII characters using Java Regular Expressions

package com.kushal.utils;

/**
 * ReplaceNonASCIICharacters.java
 * @author Kushal Paudyal
 * www.sanjaal.com/java
 *
 * This class reads a file with non ASCII Characters in it.
 * Replaces the non ASCII Characters using regular expression.
 * Saves the content with non-ASCII Characters removed to a new file.
 */

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class ReplaceNonAsciiCharacters {

	public static void main(String args[]) {

		/**
		 * This is the input file name with some non-ASCII characters in the
		 * content of the file.
		 */
		String fileName = "C:/Temp/WithNonASCIICharacters.txt";
		/**
		 * This is the location of the output file - the content of this file
		 * will be the input file content minus the non-ASCII characters.
		 */
		String outputFileName = "C:/Temp/WithNonASCIICharactersRemoved.txt";

		try {

			/**
			 * Create a reader to read the input file
			 */
			BufferedReader in = new BufferedReader(new FileReader(fileName));
			String line = "";

			String formattedStr = "";
			int count = 0;
			/**
			 * Iterate through each line of content
			 * remove any non-ASCII characters with blank using
			 * regular expression.
			 *
			 * Append the new line character properly.
			 */
			while ((line = in.readLine()) != null) {
				if (count == 0)
					formattedStr += line.replaceAll("[^\\p{ASCII}]", "");
				else
					formattedStr += "\n" + line.replaceAll("[^\\p{ASCII}]", "");

				count++;
			}

			/**
			 * Write the content to the output file using BufferedWriter object.
			 */
			BufferedWriter out = new BufferedWriter(new FileWriter(
					outputFileName));
			out.write(formattedStr);

			/**
			 * Once done, flush the writer and close it.
			 */
			out.flush();
			out.close();

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	/*
	 * SANJAAL CORPS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE
	 * SUITABILITY OF THE SOFTWARE, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
	 * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
	 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SANJAAL CORPS SHALL NOT BE
	 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING,
	 * MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
	 *
	 * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
	 * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
	 * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
	 * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
	 * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
	 * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
	 * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). SANJAAL CORPS
	 * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
	 * HIGH RISK ACTIVITIES.
	 */
}

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