Replacing non-ASCII characters using Java Regular Expressions
Kushal Paudyal August 16th, 2010
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();
}
}
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Originally posted 2010-04-15 15:06:07.
