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Jul 24, 2024 · StringBuffer is a peer class of String that provides much of the functionality of strings. The string represents fixed-length, immutable character sequences while StringBuffer represents growable and writable character sequences. StringBuffer may have characters and substrings inserted in the middle or appended to the end.
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Java StringBuffer class is used to create mutable (modifiable) String objects. The StringBuffer class in Java is the same as String class except it is mutable i.e. it can be changed. Note: Java StringBuffer class is thread-safe i.e. multiple threads cannot access it simultaneously. So it is safe and will result in an order.
A thread-safe, mutable sequence of characters. A string buffer is like a String, but can be modified. At any point in time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls. String buffers are safe for use by multiple threads.
Oct 15, 2024 · The java.lang.StringBuffer.delete() is an inbuilt method in Java which is used to remove or delete the characters in a substring of this sequence. The substring starts at a specified index start_point and extends to the character at the index end_point. Syntax : public StringBuffer delete(int start_point, int end_point) Parameters : The method acce
- capacity() This method returns the current capacity. The capacity is the amount of storage available for newly inserted characters, beyond which allocation will occur.
- charAt(int index) Returns the char value at the specified index. An index ranges from zero to length() - 1. The first char value of the sequence is at index zero, the next at index one, and so on, as for array indexing.
- codePointAt(int index) This method returns the character (Unicode code point) at the specified index. The index refers to char values (Unicode code units) and ranges from 0 to length()- 1.
- codePointBefore(int index) This method returns the character (Unicode code point) before the specified index. The index refers to char values (Unicode code units) and ranges from 1 to length.
StringBuffer has been part of the Java language since the early versions, providing backward compatibility for older codebases. Although StringBuilder is a newer alternative with better performance in single-threaded scenarios due to its lack of synchronization, StringBuffer remains relevant for scenarios requiring thread safety.
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Appends the specified StringBuffer to this sequence. The characters of the StringBuffer argument are appended, in order, to the contents of this StringBuffer, increasing the length of this StringBuffer by the length of the argument. If sb is null, then the four characters "null" are appended to this StringBuffer.
