CharSequenceUtils (Apache Commons Lang 3.8 API)

java.lang.Object
- org.apache.commons.lang3.CharSequenceUtils

```
public class CharSequenceUtils
extends Object
```
Operations on CharSequence that are null safe.

Since:

3.0

See Also:

CharSequence

Constructor Summary

Constructors
Constructor Description

CharSequenceUtils()
CharSequenceUtils instances should NOT be constructed in standard programming.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static CharSequence`	`subSequence(CharSequence cs, int start)`	Returns a new `CharSequence` that is a subsequence of this sequence starting with the `char` value at the specified index.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CharSequenceUtils
```
public CharSequenceUtils()
```
    CharSequenceUtils instances should NOT be constructed in standard programming.
    
    This constructor is public to permit tools that require a JavaBean instance to operate.
- Method Detail
  - subSequence
```
public static CharSequence subSequence(CharSequence cs,
                                       int start)
```
    Returns a new CharSequence that is a subsequence of this sequence starting with the char value at the specified index.
    
    This provides the CharSequence equivalent to String.substring(int). The length (in char) of the returned sequence is length() - start, so if start == end then an empty sequence is returned.
    
    Parameters:
    
    cs - the specified subsequence, null returns null
    
    start - the start index, inclusive, valid
    
    Returns:
    
    a new subsequence, may be null
    
    Throws:
    
    IndexOutOfBoundsException - if start is negative or if start is greater than length()