#Java - Code Snippets for '#Filter'

#Java - Code Snippets for '#Filter' - 13 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);

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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. Write a Program that gets a set of numbers , filters out the non prime numbers , calculate the factorial of each prime number and then finds the average of all factorials using Lambda expressions

public class BuggyBread1 {

   

   public static void main(String args[]) {

      

      // 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);

      intSet.add(5);



      double averageOfNonPrimeFactorials = intSet.stream().filter(p->checkIfPrime(p)).collect(Collectors.averagingInt(p->calculateFactorial(p)));

      

      System.out.println(averageOfNonPrimeFactorials );

   }

   

   static private boolean checkIfPrime(int num){

      for(int count=2;count < num;count++){

         if(num % count == 0){

            return false;

         }

      }

      return true;

   }

   

   static private int calculateFactorial(int num){

      int factorial = 1;

      for(int count=num;count > 0;count--){

         factorial = factorial * count;

      }

      return factorial;

   }

}

_{Like Feedback java 8 lambda expressions lambda filter Collectors factorial prime number}

Sample 5. Code Sample / Example / Snippet of javax.swing.GrayFilter

    public static Image createDisabledImage (Image i) {

        GrayFilter filter = new GrayFilter(true, 50);

        ImageProducer prod = new FilteredImageSource(i.getSource(), filter);

        Image grayImage = Toolkit.getDefaultToolkit().createImage(prod);

        return grayImage;

    }

_{Like Feedback javax.swing.GrayFilter}

Sample 6. 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 7. Code Sample / Example / Snippet of org.mortbay.jetty.servlet.FilterHolder

  protected void defineFilter(WebApplicationContext ctx, String name,

      String classname, Map<String, String> parameters, String[] urls) {



    WebApplicationHandler handler = ctx.getWebApplicationHandler();

    FilterHolder holder = handler.defineFilter(name, classname);

    if (parameters != null) {

      for(Map.Entry<String, String> e : parameters.entrySet()) {

        holder.setInitParameter(e.getKey(), e.getValue());

      }

    }



    for (String url : urls) {

      handler.addFilterPathMapping(url, name, Dispatcher.__ALL);

    }

  }

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Sample 8. Code Sample / Example / Snippet of org.apache.calcite.rel.logical.LogicalFilter

    public RelNode convert(RelNode rel) {

      final LogicalFilter filter = (LogicalFilter) rel;

      final RelTraitSet traitSet = filter.getTraitSet().replace(out);

      return new MongoFilter(

          rel.getCluster(),

          traitSet,

          convert(filter.getInput(), out),

          filter.getCondition());

    }

_{Like Feedback org.apache.calcite.rel.logical.LogicalFilter}

Sample 9. Code Sample / Example / Snippet of javax.servlet.Filter

    public List<ArtifactObject> lrp(String filter) throws Exception {

        Filter f = m_context.createFilter(filter);

        List<ArtifactObject> rps = m_artifactRepository.getResourceProcessors();

        List<ArtifactObject> res = new LinkedList<>();

        for (ArtifactObject rp : rps) {

            if (f.matchCase(rp.getDictionary())) {

                res.add(rp);

            }

        }

        return res;

    }

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Sample 10. Code Sample / Example / Snippet of org.osgi.framework.Filter

    public List<ArtifactObject> lrp(String filter) throws Exception {

        Filter f = m_context.createFilter(filter);

        List<ArtifactObject> rps = m_artifactRepository.getResourceProcessors();

        List<ArtifactObject> res = new LinkedList<>();

        for (ArtifactObject rp : rps) {

            if (f.matchCase(rp.getDictionary())) {

                res.add(rp);

            }

        }

        return res;

    }

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Sample 11. Code Sample / Example / Snippet of org.apache.felix.framework.capabilityset.SimpleFilter

    private static boolean matchMandatoryAttrbute(String attrName, SimpleFilter sf)

    {

        if ((sf.getName() != null) && sf.getName().equals(attrName))

        {

            return true;

        }

        else if (sf.getOperation() == SimpleFilter.AND)

        {

            List list = (List) sf.getValue();

            for (int i = 0; i < list.size(); i++)

            {

                SimpleFilter sf2 = (SimpleFilter) list.get(i);

                if ((sf2.getName() != null)

                    && sf2.getName().equals(attrName))

                {

                    return true;

                }

            }

        }

        return false;

    }

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Sample 12. Get only files from a directory using FileFilter

File dir = new File("C:/Folder");



File[] files = dir.listFiles(new FileFilter() {

   @Override

   public boolean accept(File file) {

      return file.isFile();

   }

});

_{Like Feedback FileFilter}

Sample 13. Get only sub directories in a directory using FileFilter

File dir = new File("C:/Folder");



File[] subdir = dir.listFiles(new FileFilter() {

   @Override

   public boolean accept(File file) {

      return file.isDirectory();

   }

});

_{Like Feedback FileFilter}

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