EditFile.java

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class EditFile {

    public static void main(String[] args) {

        try{
        	//replace1 { with newline
        	/*
        	Path path = Paths.get("/Users/raveekhandagale/Documents/XML_and_WI/Data set/Douban/parsedRatings.txt");
        	Charset charset = StandardCharsets.UTF_8;

        	String content = new String(Files.readAllBytes(path), charset);
        	content = content.replaceAll("}", "\n");
        	Files.write(path, content.getBytes(charset));
        	*/
        	//replace1 ends here
        	
        	//replace2 {user id: with "" and "  " with "" and  movie id: with "" and rating: with ""
        	Path path = Paths.get("/Users/raveekhandagale/Documents/XML_and_WI/Data set/Douban/parsedRatings.txt");
        	Charset charset = StandardCharsets.UTF_8;

        	String content = new String(Files.readAllBytes(path), charset);
        	
        	content = content.replaceAll("userid:", "");
        	content = content.replaceAll(" ", "");
        	content = content.replaceAll("movieid:", "");
        	content = content.replaceAll("rating:", "");
        	content = content.replaceAll("\\{", "");
        	Files.write(path, content.getBytes(charset));
        	//replace 2 ends here
System.out.println("done");
        }catch(IOException e){
        e.printStackTrace();
        }
    }
    
}