Java 7 script showing how a regex can be used to split strings delimited by backslash characters.

RegexScript.java

package script;

import java.io.BufferedReader;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

public class RegexScript {
	
	public static final String INPUT_FILE = "sample.txt";
	public static final String SPLIT_REGEX = "\\s*,\\s*|\\\\|/";
	
	/**
	 * The script reads a file, line by line, and splits each line using
	 * a predefined regex. The results of the split are then displayed element
	 * by element for each line.
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		
		// Make sure the file exists!
		Path inputFilePath = getInputFilePath();
		System.out.println("inputFilePath: " + inputFilePath.toAbsolutePath());
		assert(Files.exists(inputFilePath));
		
		// Read the file using a BufferedReader object
		List<String> lines = null;
		
		try {
			Charset utf8 = Charset.forName("UTF-8");
			lines = Files.readAllLines(getInputFilePath(), utf8);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		// Make sure we read something!
		assert(lines != null);
		
		// For each read line, split the string by the regex
		// and then display the results of the split.
		for (String eachLine : lines) {
			System.out.println("line: " + eachLine);
			
			// Split the string.
			String[] parts = eachLine.split(SPLIT_REGEX);
			
			// Display the split parts
			//System.out.println("line parts: " + parts);
			System.out.println(Arrays.toString(parts));
		}
	}

	private static Path getInputFilePath() {
		return Paths.get(INPUT_FILE);
	}
}

sample.txt

The quick brown fox
jumped\over\the
lazy,  crazy    ,brown,sleeping , dog
who/was/eating/pastries