DefaultMBeanServerInterceptor.java 文件源码

public boolean isRegistered(ObjectName name) {
    if (name == null) {
        throw new RuntimeOperationsException(
                 new IllegalArgumentException("Object name cannot be null"),
                 "Object name cannot be null");
    }

    name = nonDefaultDomain(name);

    /* No Permission check */
    // isRegistered is always unchecked as per JMX spec.

    return (repository.contains(name));
}