IntStream of() in Java

IntStream of(int t)

IntStream of(int t) returns a sequential IntStream containing a single element. 
Syntax : 
 

static IntStream of(int t)

Parameters : 
 

1. IntStream : A sequence of primitive int-valued elements.
2. t : Represents the single element in the IntStream.

Return Value : IntStream of(int t) returns a sequential IntStream containing the single specified element.
Example : 
 

Output : 
 

-7

 

IntStream of(int... values)

IntStream of(int... values) returns a sequential ordered stream whose elements are the specified values. 
Syntax : 
 

static IntStream of(int... values)

Parameters : 
 

1. IntStream : A sequence of primitive int-valued elements.
2. values : Represents the elements of the new stream.

Return Value : IntStream of(int... values) returns a sequential ordered stream whose elements are the specified values.
Example 1 : 
 

Output : 
 

-7
-9
-11

Example 2 : 
 

Output : 
 

3

 Example 3

Streams are not reusable if we have performed terminal operation on stream and try to reuse them again IllegalStateExeception will be generated 

Output :

OptionalInt[10]

java.lang.IllegalStateException: stream has already been operated upon or closed

To reuse a stream  we need Supplier class when get() method of Supplier is called every time it will generate a new instance and return it.

Output :

1
61
343
434
512
561
5234
613434

434
512
5234
613434

613434
5234
512
434

Example 4

Finding min,max,sum and average from an IntStream

Output :

Average : 77572.5
Sum : 620580
min : 1
max : 613434

Example 5

Range based operation