aoqi@0: Neg11.java:15:12: compiler.err.override.meth.doesnt.throw: (compiler.misc.cant.implement: m(), Neg11.C1, m(), Neg11.I), java.lang.Exception
aoqi@0: Neg11.java:18:21: compiler.err.override.meth.doesnt.throw: (compiler.misc.cant.implement: m(), Neg11.C3, m(), Neg11.I), java.lang.Exception
aoqi@0: 2 errors