StyleSheetList (Java SE 9 & JDK 9 )

```
public interface StyleSheetList
```
The StyleSheetList interface provides the abstraction of an ordered collection of style sheets.
The items in the StyleSheetList are accessible via an integral index, starting from 0.
See also the Document Object Model (DOM) Level 2 Style Specification.

Since:

1.4, DOM Level 2

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getLength()`	The number of `StyleSheets` in the list.
`StyleSheet`	`item(int index)`	Used to retrieve a style sheet by ordinal index.

- Method Detail
  - getLength
```
int getLength()
```
    The number of StyleSheets in the list. The range of valid child stylesheet indices is 0 to length-1 inclusive.
  - item
```
StyleSheet item(int index)
```
    Used to retrieve a style sheet by ordinal index. If index is greater than or equal to the number of style sheets in the list, this returns null.
    
    Parameters:
    
    index - Index into the collection
    
    Returns:
    
    The style sheet at the index position in the StyleSheetList, or null if that is not a valid index.