Skilgannon's kd-tree

You'll need to extract the .jar file, and make a new wrapper class in net/robowiki/knn/implementations directory, similar to the other ones there. Then at the top of net/robowiki/knn/implementations/KNNBenchmark.java you'll need to add a reference to the tree you want to test, like the others are referenced.

how do i make a new knn.jar with the latest skilgannon kd-tree

You don't need to. Just run the KNNBenchmark by java KNNBenchmark.class

it doesn't work

on my ubuntu i only have icedtea and openjdk

What are the errors? IcedTea and OpenJDK should be fine.

i need anybody to give me test results of the latest skilgannon kd-tree

Could not find or load main class KNNBenchmark.class

You need to navigate to the base directory where you extracted the files. Then try java net.robowiki.knn.KNNBenchmark

how do i put the latest skilgannon tree in KNN.jar

because when i put it in the KNN jar it doesn't work

This should be a good place to start [1]

i mean when i put drussgt 3.1.0's tree in the base directory where i extracted the files it doesn't work

There were some minor changes in the tree, so the adapter might need to be changed from new KDTree(... to new KDTree.Euclidean(..., but after that you're on your own. You haven't given any indication of what is wrong, why it isn't working or even exactly what you did.

how do i change the adapter

I already explained that here and in the post above.