#Java - Code Snippets for '#Predicate'

#Java - Code Snippets for '#Predicate' - 11 code snippet(s) found

Sample 1. Specify a Predicate ( Filter ) for a campaign Id for Google Adwords reports

Usage of

import com.google.api.ads.adwords.lib.jaxb.v201802.Selector;
com.google.api.ads.adwords.lib.jaxb.v201802.Predicate;
com.google.api.ads.adwords.lib.jaxb.v201802.PredicateOperator;

// Create selector

Selector selector = new Selector();

selector.getFields().addAll(Arrays.asList("Id","Criteria","Conversions"));

      

Predicate predicate = new Predicate();

predicate.setField("CampaignId");

PredicateOperator predicateOperator = PredicateOperator.EQUALS;

predicate.setOperator(predicateOperator);

predicate.getValues().add(campaignId);

      

selector.getPredicates().add(predicate);

_{Like Feedback Google Adwords Api Adwords Java Api Adwords}

Sample 2. Get count of elements greater than 1 using Lambda Expression

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Use Stream, Predicate and Filter to get the count of elements more than 1



System.out.println(intSet.stream().filter(moreThan2Pred).count()); // Prints 3

_{Like Feedback lambda expression collections set hashset generics stream predicate filter}

Sample 3. Get all elements greater than 2, sort them and then push them to a new set, using Lambda Expression

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Set the predicate or the condition for filtering the elements.



Predicate<Integer> moreThan2Pred = (p) -> (p > 1); 



// Use Filter to refine the element set, sort to Sort and Collectors.toSet to get a set out of Stream.



intSet =  intSet.stream().filter(moreThan2Pred).sorted().collect(Collectors.toSet());

    

System.out.println(intSet); // Prints [2, 3, 4]

_{Like Feedback lambda expression collections set hashset generics stream predicate filter sort java.util.hashset java.util.stream.Collectors}

Sample 4. Find, if all elements of a collection matches the specified condition ( Using Lambda expressions )

^{Admin
info@buggybread.com}

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Specify the Predicate or the Condition using Lambda expressions



Predicate<Integer> moreThan2Pred = (p) -> (p > 2); 



// Use the stream method allMatch to see if all elements fulfils the Predicate.

_{Like Feedback lambda expression collections set hashset generics predicate}

Sample 5. Count number of collection elements using Lambda Expressions

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Use the stream method count to see if all elements fulfils the Predicate.



System.out.println(intSet.stream().count); // Prints 4.

_{Like Feedback lambda expression collections set hashset generics predicate}

Sample 6. Find, if any element of the collection matches the specified condition ( Using Lambda Expressions )

^{Admin
info@buggybread.com}

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Specify the Predicate or the Condition using Lambda expressions



Predicate<Integer> moreThan2Pred = (p) -> (p > 2); 



// Use the stream method anyMatch to see if all elements fulfils the Predicate.



System.out.println(intSet.stream().anyMatch(moreThan2Pred)); // Prints True.

_{Like Feedback lambda expression collections set hashset generics predicate}

Sample 7. Find, if no element of the collection matches the specified condition ( Inverse of anyMatch )

// Declare and Initialize the Collection



Set<Integer> intSet = new HashSet<Integer>();



// Add Elements



intSet.add(1);

intSet.add(2);

intSet.add(3);

intSet.add(4);



// Specify the Predicate or the Condition using Lambda expressions



Predicate<Integer> moreThan2Pred = (p) -> (p > 2); 



// Use the stream method noneMatch to see if all elements fulfils the Predicate.



System.out.println(intSet.stream().noneMatch(moreThan2Pred)); // Prints False.

_{Like Feedback lambda expression collections set hashset generics predicate}

Sample 8. Filtering objects using google.common.base.Predicate

static Collection<Employee> employeesGreaterThan30(Collection<Employee> employees) {

    return filter(employees, new Predicate<Employee>() {

      @Override

      public boolean apply(Employee employee) {

        return employee.getAge() > 30;

      }

  });

}

_{Like Feedback predicate google.common.base.Predicate filter objects alternate for predicate before java 8 collections google guava}

Sample 9. Internal Implementation of ArrayList#removeIf

@Override

    public boolean removeIf(Predicate<? super E> filter) {

        Objects.requireNonNull(filter);

 

        int removeCount = 0;

        final BitSet removeSet = new BitSet(size);

        final int expectedModCount = modCount;

        final int size = this.size;

        for (int i=0; modCount == expectedModCount && i < size; i++) {

            @SuppressWarnings("unchecked")

            final E element = (E) elementData[i];

            if (filter.test(element)) {

                removeSet.set(i);

                removeCount++;

            }

        }

        if (modCount != expectedModCount) {

            throw new ConcurrentModificationException();

        }



        // shift surviving elements left over the spaces left by removed elements

        final boolean anyToRemove = removeCount > 0;

        if (anyToRemove) {

            final int newSize = size - removeCount;

            for (int i=0, j=0; (i < size) && (j < newSize); i++, j++) {

                i = removeSet.nextClearBit(i);

                elementData[j] = elementData[i];

            }

            for (int k=newSize; k < size; k++) {

                elementData[k] = null;  // Let gc do its work

            }

            this.size = newSize;

            if (modCount != expectedModCount) {

                throw new ConcurrentModificationException();

            }

            modCount++;

        }



        return anyToRemove;

    }

_{Like Feedback Internal Implementation of ArrayList#removeIf java.util.function.Predicate java.util.Objects java.util.Objects java.util.ConcurrentModificationException.ConcurrentModificationException}

Sample 10. Count elements of a collection matching a Predicate using Apache Commons IterableUtils

List<String> list = new ArrayList();

list.add("Washington");

list.add("Nevada");

list.add("California");

list.add("New York");

list.add("New Jersey");



// <String> long org.apache.commons.collections4.IterableUtils.countMatches(Iterable<String> input, Predicate<? super String> predicate)

      

System.out.println(IterableUtils.countMatches(list, p->((String)p).startsWith("N")));

_{Like Feedback Apache Commons IterableUtils Apache Commons Predicate Java 8 Count elements of a collection java8}

Sample 11. Usage of java.util.function.BiPredicate

BiPredicate<String, String> predicate = (s1, s2) -> (s1.equals(s2));



System.out.println(predicate.test("BUGGY", "BREAD"));

_{Like Feedback BiPredicate Java 8 BiPredicate}

Search Java Code Snippets