Are TreeSet.floor() and TreeSet.ceiling() methods missing in Android?

this one is a deep mystery to me.

Take a look at this:

TreeSet<Long> s = new TreeSet<Long>();
s.add(Long.valueOf(1));
s.add(Long.valueOf(4));
s.add(Long.valueOf(6));
s.add(Long.valueOf(9));

Long upper = s.ceiling(Long.valueOf(5));
Long lower = s.floor(Long.valueOf(5));

In a normal Java VM, this compiles and runs beautifully.

If I take a look at Android's API doc, and even according to: http://www.java2s.com/Open-Source/Android/android-core/platform-libcore/java/util/TreeSet.java.htm

the methods ceiling and floor should be there.

Bu开发者_运维百科t if I try to use them in Eclipse + Android SDK (Build Target is "8"), Eclipse is telling me that floor(Long) and ceiling(Long) are not defined for class TreeSet

Any idea?

Thanks, Karlheinz

floor is API level 9, same goes for ceiling.

Android javadoc for TreeSet

In a normal Java VM, this compiles and runs beautifully.

Not in my JVM (which is 1.5.0_22). There I have headSet(...) and tailSet(...).