OpenJDK 8
OpenJDK 8
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StringBuffer

Class StringBuffer

All Implemented Interfaces:
Serializable, Appendable, CharSequence 
public final class StringBuffer
extends Object
implements Serializable, CharSequence

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. The met