Android Text File Content Remove removeRepeat(String filePath)

Description

remove Repeat

License

Open Source License

Declaration

public static void removeRepeat(String filePath) throws IOException 

Method Source Code

//package com.java2s;
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.util.HashSet;
import java.util.Set;

public class Main {

    public static void removeRepeat(String filePath) throws IOException {
        Set<String> set = new HashSet<String>();
        File file = new File(filePath);
        BufferedWriter bw;//from   w w w . ja v a  2 s  . c o  m
        BufferedReader br;
        if (!file.exists())
            return;
        br = new BufferedReader(new FileReader(file));
        while (br.ready()) {
            set.add(br.readLine());
        }
        br.close();
        bw = new BufferedWriter(new FileWriter(file));
        for (String str : set) {
            bw.write(str);
            bw.newLine();
        }
        bw.close();
    }
}