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Object Oriented Programming Articles
Page 77 of 588
LongStream count() method in Java
The count() method of the LongStream class in Java is used to return the count of elements in this stream.The syntax is as follows.long count()To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create a LongStream and add some elements.LongStream longStream = LongStream.of(50L, 30L, 80L, 40L, 15L, 60L);Now, get the count of elements.longStream.count()The following is an example to implement LongStream count() method in Java.Exampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(50L, 30L, 80L, 40L, 15L, 60L); System.out.println("The number of elements in the stream ...
Read MoreThe isEmpty() method of AbstractSequentialList in Java
The isEmpty() method of the AbstractSequentialList class is used to check whether the list is empty or not. If it is empty, then TRUE is returned, else FALSE.The syntax is as follows.public boolean isEmpty()To work with the AbstractSequentialList class in Java, you need to import the following package.import java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList isEmpty() method in Java.Exampleimport java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { AbstractSequentialList absSequential = new LinkedList(); absSequential.add(110); absSequential.add(320); absSequential.add(400); absSequential.add(550); absSequential.add(600); absSequential.add(700); absSequential.add(900); System.out.println("Elements in ...
Read MoreLocalDate until() Method in Java
The difference between two LocalDate objects can be obtained using the until() method in the LocalDate class in Java. This method requires a single parameter i.e. the end date for the LocalDate object and it returns the difference between two LocalDate objects using a Period object.A program that demonstrates this is given as follows:Exampleimport java.time.*; public class Demo { public static void main(String[] args) { LocalDate ld1 = LocalDate.parse("2019-01-10"); LocalDate ld2 = LocalDate.parse("2019-02-14"); System.out.println("The first LocalDate is: " + ld1); System.out.println("The second LocalDate is: " + ld2); ...
Read MorePeriod getYears() method in Java
The number of years for a particular Period can be obtained using the getYears() method in the Period class in Java. This method requires no parameters and it returns the number of years in the Period.A program that demonstrates this is given as followsExampleimport java.time.Period; public class Demo { public static void main(String[] args) { String period = "P5Y7M15D"; Period p = Period.parse(period); System.out.println("The Period is: " + p); System.out.println("The number of years are: " + p.getYears()); } }OutputThe Period is: P5Y7M15D The number of years ...
Read MoreIntStream sum() method in Java
The sum() method of the IntStream class is used in Java to return the sum of elements in this stream.The syntax is as follows −int sum()To work with the IntStream class in Java, import the following package −import java.util.stream.IntStream;Create IntStream and add some elements −IntStream intStream = IntStream.of(50, 100, 150, 200, 250, 300);Now, return the sum of elements in the IntStream added above −int sumVal = intStream.sum();The following is an example to implement IntStream sum() method in Java −Exampleimport java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = IntStream.of(50, 100, ...
Read MoreIntStream range() method in Java
The range() method in the IntStream class in Java is used to return a sequential ordered IntStream from startInclusive to endExclusive by an incremental step of 1. This includes the startInclusive as well.The syntax is as follows −static IntStream range(int startInclusive, int endExclusive)Here, the parameter startInclusive includes the starting value, whereas endExclusive excludes the last valueTo work with the IntStream class in Java, import the following package −import java.util.stream.IntStream;Create an IntStream and add stream elements in a range using range() method. This returns a sequential ordered IntStream by an incremental step of 1 within the range −intStream.forEach(System.out::println);The following is an ...
Read MoreDoubleStream mapToObj() method in Java
The mapToObj() method of the DoubleStream class returns an object-valued Stream consisting of the results of applying the given function to the elements of this stream.The syntax is as follows − Stream mapToObj(DoubleFunction
Read MoreThe equals() method of AbstractSequentialList in Java
The equals() method is inherited from the AbstractList class in Java. It is used to check the object for equality with this list. It returns TRUE if the object is equal to this list, else FALSE is returned.The syntax is as follows −public boolean equals(Object o)Here, o is the object to be compared for equality with this list.To work with the AbstractSequentialList class in Java, you need to import the following packageimport java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList equals() method in JavaExampleimport java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { ...
Read MoreLongStream forEachOrdered() method in Java
The forEachOrdered() method in Java performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.The syntax is as follows −void forEachOrdered(LongConsumer action)Here, parameter wrapper is a non-interfering action to perform on the elements. LongConsumer represents an operation that accepts a single long-valued argument and returns no result.To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;The following is an example to implement LongStream forEachOrdered() method in Java −Exampleimport java.util.*; import java.util.stream.LongStream; public class Demo { public static void main(String[] ...
Read MoreThe isEmpty() method of Java AbstractCollection class
The isEmpty() method of the AbstractCollection class checks whether the collection is empty or not i.e. whether it has zero elements. It returns if the Collectionn has no elements.The syntax is as follows −public boolean isEmpty()To work with AbstractCollection class in Java, import the following package −import java.util.AbstractCollection;The following is an example to implement AbstractCollection isEmpty() method in Java −Exampleimport java.util.ArrayList; import java.util.AbstractCollection; public class Demo { public static void main(String[] args) { AbstractCollection absCollection = new ArrayList(); absCollection.add("Laptop"); absCollection.add("Tablet"); absCollection.add("Mobile"); absCollection.add("E-Book Reader"); ...
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