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Object Oriented Programming Articles
Page 237 of 589
LongStream forEach() method in Java
The forEach() method of the LongStream class in Java performs an action for each element of this stream.The syntax is as followsvoid forEach(LongConsumer action)Here, the parameter action 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 packageimport java.util.stream.LongStream;The following is an example to implement LongStream forEach() method in JavaExampleimport java.util.*; import java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(1000L, 12000L, 30000L); ...
Read MoreIntStream min() method in Java
The IntStream min() method in the Java IntStream class is used to get the minimum element from the stream. It returns an OptionalInt describing the minimum element of this stream, or an empty optional if this stream is empty.The syntax is as followsOptionalInt min()Here, OptionalInt is a container object which may or may not contain an int value.Create an IntStream and add some elementsIntStream intStream = IntStream.of(89, 45, 67, 12, 78, 99, 100);Now, get the minimum element of the streamOptionalInt res = intStream.min();The following is an example to implement IntStream min() method in Java. The isPresent() method of the OptionalInt ...
Read MoreLongStream.Builder build() method in Java
The build() method of the LongStream.Builder class builds the stream, transitioning this builder to the built state.The syntax is as followsLongStream build()To use the LongStream.Builder class in Java, import the following packageimport java.util.stream.LongStream;The following is an example to implement LongStream.Builder build() method in JavaExampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream.Builder builder = LongStream.builder(); builder.accept(255L); builder.accept(570L); builder.accept(355L); builder.accept(155L); ...
Read MoreIntStream average() method in Java
The average() method of the IntStream class in Java returns an OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty. It gets the average of the elements of the stream.The syntax is as followsOptionalDouble average()Here, OptionalDouble is a container object which may or may not contain a double value.Create an IntStream with some elementsIntStream intStream = IntStream.of(15, 13, 45, 18, 89, 70, 76, 56);Now, get the average of the elements of the streamOptionalDouble res = intStream.average();The following is an example to implement IntStream average() method in Java. The isPresent() method ...
Read MoreCollectors averagingDouble() method in Java 8
The averagingDouble() method of the Collectors class in Java 8 returns a Collector that is the arithmetic mean of a double-valued function applied to the input elements.The syntax is as follows −public static Collector averagingDouble(ToDoubleFunction
Read MoreLongStream rangeClosed() method in Java
The rangeClosed() method of the LongStream class in Java returns a sequential ordered LongStream from startInclusive to endExclusive by an incremental step of 1. This is inclusive of the initial element and the last element.The syntax is as follows −static LongStream rangeClosed(long startInclusive, long endExclusive)Here, startInclusive is the first value, whereas the endExclusive is the last.To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;The following is an example to implement LongStream rangeClosed() method in Java −Exampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { ...
Read MoreThe addIfAbsent() method of CopyOnWriteArrayList in Java
The addIfAbsent() method appends the element if it is not in the list. If the element is already in the list, then FALSE is returned.The syntax is as follows.public boolean addIfAbsent(E ele)Here, ele is the element to be added to this list, if it is not already in the list.To work with CopyOnWriteArrayList class, you need to import the following package.import java.util.concurrent.CopyOnWriteArrayList;The following is an example to implement CopyOnWriteArrayList class addIfAbsent() method in Java.Exampleimport java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); arrList.add(30); arrList.add(40); arrList.add(60); ...
Read MoreStringJoiner add() method in Java 8
The add() method of the StringJoiner class is used in Java 8 to add a copy of the given CharSequence value as the next element of the StringJoiner value. If the new element ele is null, then the value null gets added.The syntax is as follows −public StringJoiner add(CharSequence ele)Here, the parameter ele is the element to be added, whereas, CharSequence is a readable sequence of char values.To work with the StringJoiner in Java 8, import the following package −import java.util.StringJoiner;We will first create a StringJoiner and set the delimeter −StringJoiner strJoin = new StringJoiner(", ")Use the add() method to ...
Read MoreIntStream filter() method in Java
The filter() method of the IntStream class in Java returns a stream consisting of the elements of this stream that match the given predicate.The syntax is as follows −IntStream filter(IntPredicate predicate)Here, the predicate parameter is a stateless predicate to apply to each element to determine if it should be included. The IntPredicate above is the predicate of one int-valued argument.Create an IntStream and add elements −IntStream intStream = IntStream.of(20, 34, 45, 67, 89, 100);Now, set a condition and filter stream elements based on it using the filter() method −intStream.filter(a -> a < 50).The following is an example to implement IntStream ...
Read MoreLongStream of() method in Java
The LongStream class in Java the following two forms of the of() method.The following of() method returns a sequential LongStream containing a single element. Here is the syntaxstatic LongStream of(long t)Here, parameter t is the single element.The following of() method returns a sequential ordered stream whose elements are the specified values.static LongStream of(long… values)Here, the parameter values are the elements of the new stream.To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;The following is an example to implement LongStream of() method in Java.Exampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { ...
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