Dag H. Wanvik wrote:
It seems -target jsr14 is not officially supported for the Sun JDK, at least it
is not
listed in the javac documentation as a valid target:
http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/javac.html#options
True.
From what I can tell -target jsr14 was introduced during generics
development in 1.5 beta, and is not officially supported nor documented
It still works though, but we probably shouldn't rely on it as it may
probably change without notice.
--- snip ---
<5>derby/tests> javac -version
javac 1.5.0_12
...
<5>derby/tests> javac -source 1.5 -target jsr14 SqlStressTest.java
<5>derby/tests>
--- snip ---
This short article on the IBM site is actually a good writeup on this
topic by a Suns Brian Goetz:
http://www.ibm.com/developerworks/java/library/j-jtp02277.html
To summarize: -target jsr14 gives you the following on a pre-java 5 JVM:
- generics
- autoboxing
- for-each loops (with some limitations)
- String concatenation using StringBuffer, not StringBuilder
If your interested in more details - please refer to the article. It has
some additional information on Retroweaver and Retrotranslator as well.
Thomas
--
Thomas Nielsen
