Javaに詳しい人教えてクレメンス

D:\NicoCache_nl>cmd /k "color 2E && TITLE AutoBuilder && cd /d D:\NicoCache_nl\ && ant extract jar"
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre-9.0.1\lib\tools.jar
Buildfile: D:\NicoCache_nl\build.xml

extract:
[unjar] Expanding: D:\NicoCache_nl\NicoCache_nl.jar into D:\NicoCache_nl\src

compile:

BUILD FAILED
D:\NicoCache_nl\build.xml:13: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "C:\Program Files\Java\jre-9.0.1"

Total time: 0 seconds

D:\NicoCache_nl>