# Java-8 Streams

# Overview:
IMO, Streams are sequence  of elements  is having various methods pipelined to get the expected results. 

Eg.
```
List <Integer> list= new ArrayList<>(Integer);
for(int i=1;i<11;i++)
list.add(i);
Stream <Integer> listStream=Stream.of(list);//Creation of String from List
``` 
Stream doesn't modify the source data.

# Operations on Stream:

- Intermediate Operations--> Lazily executed and returns a stream. It can be pipelined.

- Terminal Operations--> Produces the result and mark the end of stream.

# Examples:

### Intermediate Operation:

**map()**--> It returns the result a stream after applying the functions on the elements of the Stream.

```
List<Integer> number= Arrays.asList(2,4,6);
List<Integer> addByOne=number.stream().map(m->m+1).collect(Collectors.toList()); 
``` 

**filter()**--> It returns the Boolean value as per the predicate passed inside the argument.


```
List<Integer> number= Arrays.asList(2,4,6);
List<Integer> filterFour=number.stream().filter(m->m>4).collect(Collectors.toList()); 
``` 
**sorted()** -->It returns the sorted value of the original stream without changing the original stream.

```
List<Integer> number= Arrays.asList(2,4,6);
List<Integer> filterFour=number.stream().sorted().collect(Collectors.toList()); 
```