Challenge: Filtering Users by Two Criteria
Uppgift
Swipe to start coding
Filter the users who are over 18 years old and have an "Active" status, then print them to the screen.
- Create a
BiPredicateto check ifageis greater than 18 andstatusis "Active". - Inside
forEach(), use theifstatement to evaluate the user based on theBiPredicate. - If the user satisfies the condition, print the user to the console.
Lösning
solution.java
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package com.example;
import java.util.List;
import java.util.Arrays;
import java.util.function.BiPredicate;
public class Main {
public static void main(String[] args) {
// Creating a list of users
List<User> users = Arrays.asList(
new User("Alice", 22, "Active"),
new User("Bob", 17, "Inactive"),
new User("Charlie", 25, "Active"),
new User("David", 16, "Active")
);
// Defining `BiPredicate` to check `age` and `status`
BiPredicate<Integer, String> isEligible = (age, status) -> age > 18 && status.equals("Active");
// Using `forEach` to iterate over the list
users.forEach(user -> {
// If the user satisfies the conditions, print the user
if (isEligible.test(user.getAge(), user.getStatus())) {
System.out.println(user); // Print the user
}
});
}
}
class User {
private String name;
private int age;
private String status;
public User(String name, int age, String status) {
this.name = name;
Var allt tydligt?
Tack för dina kommentarer!
Avsnitt 1. Kapitel 14
single
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package com.example;
import java.util.List;
import java.util.Arrays;
import java.util.function.BiPredicate;
public class Main {
public static void main(String[] args) {
// Creating a list of users
List<User> users = Arrays.asList(
new User("Alice", 22, "Active"),
new User("Bob", 17, "Inactive"),
new User("Charlie", 25, "Active"),
new User("David", 16, "Active")
);
// Defining `BiPredicate` to check `age` and `status`
BiPredicate<Integer, String> isEligible = (age, status) -> ___ && status.___;
// Using `forEach` to iterate over the list
users.forEach(user -> {
// If the user satisfies the conditions, print the user
if (___.test(___, ___)) {
___
}
});
}
}
class User {
private String name;
private int age;
private String status;
public User(String name, int age, String status) {
this.name = name;
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