void compileAndCheck( VarargsMethod m1, VarargsMethod m2, TypeKind actual, ArgumentsArity argsArity) throws Exception { final JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); JavaSource source = new JavaSource(m1, m2, actual, argsArity); ErrorChecker ec = new ErrorChecker(); JavacTask ct = (JavacTask) tool.getTask(null, fm, ec, null, null, Arrays.asList(source)); ct.generate(); check(source, ec, m1, m2, actual, argsArity); }