LongStream count() returns the count of elements in the stream. LongStream count() is present in java.util.stream.LongStream
Syntax :
long count()
Example 1 : Count the elements in LongStream.
// Java code for LongStream count() // to count the number of elements in // given stream import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.of(2L, 3L, 4L, 5L,
6L, 7L, 8L);
// storing the count of elements
// in a variable named total
long total = stream.count();
// displaying the total number of elements
System.out.println(total);
}
} |
Output:
7
Example 2 : Count the elements in a given range.
// Java code for LongStream count() // to count the number of elements in // given range excluding the last element import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.range( 2 , 50 );
// storing the count of elements
// in a variable named total
long total = stream.count();
// displaying the total number of elements
System.out.println(total);
}
} |
Output:
48
Example 3 : Count distinct elements in LongStream.
// Java code for LongStream count() // to count the number of distinct // elements in given stream import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.of(2L, 3L, 4L, 4L,
7L, 7L, 8L);
// storing the count of distinct elements
// in a variable named total
long total = stream.distinct().count();
// displaying the total number of elements
System.out.println(total);
}
} |
Output:
5
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