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Solution.java

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import java.io.BufferedReader;

import java.io.File;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Scanner;

public class Solution {

private static final Scanner scan = new Scanner(System.in);

static String readFile(String fileName) throws IOException {

BufferedReader br = new BufferedReader(new FileReader(fileName));

try {

StringBuilder sb = new StringBuilder();

String line = br.readLine();

while (line != null) {

String[] temp = line.split(" ");

String tempRes = temp[6];

String lastWord = tempRes.substring(tempRes.lastIndexOf("/") + 1);

if(lastWord.contains(".gif")){

sb.append(lastWord);

sb.append("\n");

}

line = br.readLine();

}

System.out.println(sb.toString());

return sb.toString();

} finally {

br.close();

}

}

public static void main(String args[]) throws Exception {

// read the string filename

String filename;

//filename = "testss.txt";

filename = scan.next();

OutputStream os = null;

String data = readFile(filename);

String resultFileName = "gifs_"+filename;

try {

// below true flag tells OutputStream to append

os = new FileOutputStream(new File(resultFileName), true);

os.write(data.getBytes(), 0, data.length());

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

os.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}