What is StringBuffer in Java?

1. Java String Handling

2. Introduction

3. String Constructors

4. String(char chars[], int startIndex, int len)

5. String(String s) method

6. String(byte asciiChars[])

7. String(byte asciiChars[], int startIndex, int len)

8. String length()

9. String Operations

10. String Conversion and toString()

11. Character Extraction

12. charAt() method

13. getChars() method

14. getByte() method

15. toCharArray() method

16. String Comparison

17. Searching Strings

18. Modifying a String

19. Changing the case of Characters

20. StringBuffer

21. Constructors in StringBuffer:

22. Methods used in StringBuffer

23. Some other important methods are:

24. insert() method in String Handling

25. reverse() method in java

26. substring() method

StringBuffer in Java:
It is a peer class of String that provides much of the functionality of the strings.
It is mutable in nature.
It may have characters and substrings inserted in the middle or appended to the end.
It is safe, since multiple threads as they are synchronised.


String represents fixed-length, immutable character sequence but StringBuffer represents growable and writeable character sequence. Constructors used in StringBuffer: