“orzec” Kod odpowiedzi

orzec

something which is affirmed or denied concerning an argument of a proposition.
Markhor

orzec

// Java program to illustrate Predicate Chaining
  
import java.util.function.Predicate;
public class PredicateInterfaceExample2 {
    public static void main(String[] args)
    {
        Predicate<Integer> greaterThanTen = (i) -> i > 10;
  
        // Creating predicate
        Predicate<Integer> lowerThanTwenty = (i) -> i < 20; 
        boolean result = greaterThanTen.and(lowerThanTwenty).test(15);
        System.out.println(result);
  
        // Calling Predicate method
        boolean result2 = greaterThanTen.and(lowerThanTwenty).negate().test(15);
        System.out.println(result2);
    }
}
Xerothermic Xenomorph

orzec

// Java program to illustrate OR Predicate
  
import java.util.function.Predicate;
class PredicateInterfaceExample4 {
    public static Predicate<String> hasLengthOf10 = new Predicate<String>() {
        @Override
        public boolean test(String t)
        {
            return t.length() > 10;
        }
    };
  
    public static void predicate_or()
    {
  
        Predicate<String> containsLetterA = p -> p.contains("A");
        String containsA = "And";
        boolean outcome = hasLengthOf10.or(containsLetterA).test(containsA);
        System.out.println(outcome);
    }
    public static void main(String[] args)
    {
        predicate_or();
    }
}
Xerothermic Xenomorph

orzec

// Java program to illustrate Simple Predicate
  
import java.util.function.Predicate;
public class PredicateInterfaceExample1 {
    public static void main(String[] args)
    {
        // Creating predicate
        Predicate<Integer> lesserthan = i -> (i < 18); 
  
        // Calling Predicate method
        System.out.println(lesserthan.test(10)); 
    }
}
Xerothermic Xenomorph

orzec

// Java program to illustrate 
// passing Predicate into function
  
import java.util.function.Predicate;
class PredicateInterfaceExample3 {
    static void pred(int number, Predicate<Integer> predicate)
    {
        if (predicate.test(number)) {
            System.out.println("Number " + number);
        }
    }
    public static void main(String[] args)
    {
        pred(10, (i) -> i > 7);
    }
}
Xerothermic Xenomorph

orzec

// Java program to illustrate 
// negate Predicate
  
import java.util.function.Predicate;
class PredicateInterfaceExample6 {
    public static Predicate<String> hasLengthOf10 = new Predicate<String>() {
        @Override
        public boolean test(String t)
        {
            return t.length() > 10;
        }
    };
  
    public static void predicate_negate()
    {
  
        String lengthGTThan10 = "Thunderstruck is a 2012 children's "
                                + "film starring Kevin Durant";
  
        boolean outcome = hasLengthOf10.negate().test(lengthGTThan10);
        System.out.println(outcome);
    }
    public static void main(String[] args)
    {
        predicate_negate();
    }
}
Xerothermic Xenomorph

orzec

// Java program to demonstrate working of predicates
// on collection. The program finds all admins in an
// arrayList of users.
import java.util.function.Predicate;
import java.util.*;
class User
{
    String name, role;
    User(String a, String b) {
        name = a;
        role = b;
    }
    String getRole() { return role; }
    String getName() { return name; }    
    public String toString() {
       return "User Name : " + name + ", Role :" + role;
    }
  
    public static void main(String args[])
    {      
        List<User> users = new ArrayList<User>();
        users.add(new User("John", "admin"));
        users.add(new User("Peter", "member"));
        List admins = process(users, (User u) -> u.getRole().equals("admin"));
        System.out.println(admins);
    }
  
    public static List<User> process(List<User> users, 
                            Predicate<User> predicate)
    {
        List<User> result = new ArrayList<User>();
        for (User user: users)        
            if (predicate.test(user))            
                result.add(user);
        return result;
    }
}
Xerothermic Xenomorph

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