should be using JavaSE-1.6 VM, and .classpath, codegen.targetPlatform, compliance and source should also all be 1.6; making these changes requires the project to have custom compiler settings in order to continue to import XPathAPI from its original location com.sun.org.apache.xpath.internal, which is still in JavaSE-1.6 rt.jar .

bin.includes = META-INF/,\
               plugin.xml,\
               components/,\
               TestComponentLibrary.jar
jars.compile.order = TestComponentLibrary.jar
source.TestComponentLibrary.jar = src/
output.TestComponentLibrary.jar = bin/