string manipulation

Need of rapper class

To store primitive value in terms of objects

To convert string into other primitive types and vise versa

Define autoboxing

The automatic conversion of primitive data type into object of its rapper classes is known as auto boxing

Unboxing

The rapper class is also used to convert that object data into specific primitive type which is called unboxing

Need of auto boxing

To pass a primitive data to am a third that uses argument as wrapper object

To add primitive data into an array list

Need of unboxing

To pass object data to a method that uses primitive argument

To copy an element from an array list object to a primitive variable

CharAt

This function returns the character locator art of classified index in a string

Length()

This function returns the number of character present in a string including the space between them if any

IT returns and interior type data valid

Substring ()

This method return a part of a string

To lowercase()

This method return the string with all uppercase letter converted to lowercase

Trim()

This method is used to remove any leading or trailing white space which are available in string

Append()

This function is used to add a string at the end of another string

Setcharat()

This person can be used to replace a character with another character specified index

Insert()

This function allowed due to insert a string at a specified index into another string

Delete ()

This message used to delete the characters from one index to another index of a string

Set lenght ()

This function allows you to set the length of a string buffer variable up to the specified range

Reverse()

This function is used to reverse the character of a given string

Capacity ()

IT returns and integer value that represent the capacity of stringbuffer object

String tokenizer class

It is another string related class used to create an object to accept the string in terms of an token