An **iterable** is a collection of objects that can be traversed. The objects are traversed using an **iterator** that uses particular methods to iterate over an object.




### Java

```java
Iterator<Integer> iterator =
Arrays.asList(1,2,3).iterator();

```

### Python

```python
iterator = iter(1,2,3) 

```

### Java
An iterator uses the following methods to traverse objects in Java:

* `hasNext()`
* `next()`
* `forEachRemaining()` (this can only be used in Java 8)

### Python
An iterator uses the following methods to traverse objects in Python:

* `next()`: returns the next item in the iterable. 
* `iter()`: returns the iterator object itself.





# Code
The codes below explain the relationship between the iterable and iterator:


import java.util.*;
import java.util.*;
import java.util.Arrays;
import java.util.List;

class example {
    public static void main( String args[] ) {
        System.out.println("Printing done using hasNext() and next()");
        Iterator<Integer> myObj = 
        Arrays.asList(1, 2, 3).iterator();
        while (myObj.hasNext()){
	    System.out.println(myObj.next());
        }
    }
}

Java

# list of numbers (iterable)
numbers = [1, 2, 3] 
  
# intialize the object 
myIterator = iter(numbers) 
  
print(next(myIterator)) 
print(next(myIterator)) 
print(next(myIterator)) 

Python3