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#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 )
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// 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


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 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 )
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// 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


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 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



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