JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package sun.jvmstat.monitor;

/**
 * Interface provided by Instrumentation Monitoring Objects.
 *
 * @author Brian Doherty
 * @since 1.5
 */
public interface Monitor  {

    /**
     * Returns the name of this instrumentation object.
     *
     * @return String - the name assigned to this instrumentation monitoring
     *                  object
     */
    String getName();

    /**
     * Returns the base name of this instrumentation object.
     * The base name is the component of the name following the last
     * "." character in the name.
     *
     * @return String - the base name of the name assigned to this
     *                  instrumentation monitoring object.
     */
    String getBaseName();

    /**
     * Returns the Units for this instrumentation monitoring object.
     *
     * @return Units - the units of measure attribute
     */
    Units getUnits();

    /**
     * Returns the Variability for this instrumentation object.
     *
     *@return Variability - the variability attribute
     */
    Variability getVariability();

    /**
     * Test if the instrumentation object is a vector type.
     *
     * @return boolean - true if this instrumentation object is a vector type,
     *                   false otherwise.
     */
    boolean isVector();

    /**
     * Return the length of the vector.
     * @return int - the length of the vector or zero if this instrumentation

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