1 - compiler.warn.incubating.modules: jdk.incubator.mvt 2 - compiler.err.warnings.and.werror 3 CheckIdentityHash.java:14:32: compiler.warn.value.does.not.support: identityHashCode 4 CheckIdentityHash.java:15:32: compiler.warn.value.does.not.support: identityHashCode 5 CheckIdentityHash.java:16:42: compiler.warn.value.does.not.support: identityHashCode 6 CheckIdentityHash.java:17:42: compiler.warn.value.does.not.support: identityHashCode 7 1 error 8 5 warnings