> Paul,
>
> Actually, my investigations in the past have shown that (at least in
> Sun's JDK 1.2) this is implemented as:
>
> new StringBuffer
> ("My").append("dog").append("has").append("fleas").toString();
>
> It is also possible to write a statement like:
>
> "My" + "dog" + '.'
>
> The ability to concatenate a char points at an underlying StringBuffer
> implementation, which supports append(String) and
> append(char) methods.
>
>
> Last paragraph in the java.lang.String javadoc says:
>
> The Java language provides special support for the string
> concatentation operator
> ( + ), and for conversion of other objects to strings. String
> concatenation is
> implemented through the StringBuffer class and its append
> method. String
> conversions are implemented through the method toString,
> defined by Object and
> inherited by all classes in Java. For additional information
> on string concatenation
> and conversion, see Gosling, Joy, and Steele, The Java
> Language Specification.
>
>
On a performance note, doesn't it strike anybody the methods
on StringBuffer are declared 'synchronized' is a bad thing?
Object creation and synchronization are 2 of the most costly operations in
Java.
- Chris.
Brainbench MVP Java2.
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