Challenge: Filtering Corporate Email Addresses
Oppgave
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You have a list of employee email addresses, and you need to keep only the corporate emails (those ending with @company.com).
- Implement a
Predicateto filter corporate emails that end with@company.com. - Pass the correct parameters to the
filterEmailsmethod. - In the
filterEmailsmethod, iterate through all email addresses using afor-eachloop. - Apply the
Predicatein theifcondition. - Add the matching emails to the new list
result.
Løsning
solution.java
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package com.example;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;
public class Main {
public static void main(String[] args) {
List<String> emails = List.of(
"john.doe@gmail.com",
"alice@company.com",
"bob@company.com",
"test@yahoo.com",
"charlie@company.com"
);
// `Predicate` for filtering corporate email addresses
Predicate<String> corporateEmailFilter = email -> email.endsWith("@company.com");
// Filter emails
List<String> corporateEmails = filterEmails(emails, corporateEmailFilter);
// Print the result
System.out.println("Corporate email addresses: " + corporateEmails);
}
public static List<String> filterEmails(List<String> emails, Predicate<String> filter) {
List<String> result = new ArrayList<>();
for (String email : emails) {
if (filter.test(email)) {
result.add(email);
}
}
return result;
}
}
Alt var klart?
Takk for tilbakemeldingene dine!
Seksjon 1. Kapittel 5
single
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package com.example;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;
public class Main {
public static void main(String[] args) {
List<String> emails = List.of(
"john.doe@gmail.com",
"alice@company.com",
"bob@company.com",
"test@yahoo.com",
"charlie@company.com"
);
// `Predicate` for filtering corporate email addresses
Predicate<String> corporateEmailFilter = email -> ___;
// Filter emails
List<String> corporateEmails = filterEmails(___, ___);
// Print the result
System.out.println("Corporate email addresses: " + corporateEmails);
}
public static List<String> filterEmails(List<String> emails, Predicate<String> filter) {
List<String> result = new ArrayList<>();
for (String email : ___) {
if (filter.___(___)) {
result.___(___);
}
}
return result;
}
}
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