StringBuffer and StringBuilder
- StringBuffer and StringBuilder
The Javadoc:SE|java/lang|StringBuffer class is one of three core string classes in the Java programming language. Most of the time, the Javadoc:SE|java/lang|String class is used, however, the StringBuffer class is a mutable object while String is immutable. That means the contents of StringBuffer objects can be modified while similar methods in the String class that appear to modify the contents of the string actually return a new String object. It is more efficient to use a StringBuffer instead of operations that result in the creation of many intermediate String objects. The Javadoc:SE|java/lang|StringBuilder class, introduced in J2SE 5.0, differs from StringBuffer in that it is unsynchronized. When only a single thread at a time will access the object, using a StringBuilder is more efficient than using a StringBuffer.
StringBuffer and StringBuilder are included in the Javadoc:SE|package=java. _ja. objects] .
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