java The file emails.txt contains a list of email addresses like this: From: jan

Question

java

The file emails.txt contains a list of email addresses like this:

From: janis joplin <kosmicblues@yahoo.com>
From: kurt cobain <lovescourtney@verizon.net>
From: jimi hendrix <meanriffs@altavista.net>
From: john lennon <imagine@hotmail.com>
From: john lennon <imagine@hotmail.com>
From: freddie mercury <bohemianrhapsody@aol.com>
From: kurt cobain <lovescourtney@verizon.net>

We need to convert it to a comma separated list of just the email addresses as such: kosmicblues@yahoo.com,meanriffs@altavista.net, imagine@hotmail.com, bohemianrhapsody@aol.com, lovescourtney@verizon.net

Write a program using streams that will read the emails.txt file and make this conversion, outputting each email address only once. Make sure your output line ends with a linefeed and not another comma-space.

Explanation / Answer

import java.io.BufferedReader;

import java.io.FileReader;

public class Main {

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

BufferedReader br = new BufferedReader(new FileReader("emails.txt"));

String line = null;

while ((line = br.readLine()) != null) {

String[] values = line.split(",");

for (String str : values) {

System.out.println(str);

}

}

br.close();

}

}

Kindly rate my answer.Thank you

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