Java AttributeList.isEmpty方法代碼示例

本文整理匯總了Java中javax.management.AttributeList.isEmpty方法的典型用法代碼示例。如果您正苦於以下問題：Java AttributeList.isEmpty方法的具體用法？Java AttributeList.isEmpty怎麽用？Java AttributeList.isEmpty使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類javax.management.AttributeList的用法示例。

在下文中一共展示了AttributeList.isEmpty方法的6個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: getProcessCpuLoad

import javax.management.AttributeList; //導入方法依賴的package包/類
public static double getProcessCpuLoad() throws Exception {

		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
		AttributeList list = mbs.getAttributes(name, new String[] { "SystemCpuLoad" });

		if (list.isEmpty())
			return Double.NaN;

		Attribute att = (Attribute) list.get(0);
		Double value = (Double) att.getValue();

		// usually takes a couple of seconds before we get real values
		if (value == -1.0)
			return Double.NaN;
		// returns a percentage value with 1 decimal point precision
		return value;
	}

開發者ID:enoy19，項目名稱:keyboard-light-composer，代碼行數:19，代碼來源:CpuUsage.java

示例2: getCpuLoad

import javax.management.AttributeList; //導入方法依賴的package包/類
/**
 * Get CPU Load of Host System
 *
 * @author http://stackoverflow.com/questions/18489273/how-to-get-percentage-of-cpu-usage-of-os-from-java
 */
private double getCpuLoad() {
	try {
		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
		AttributeList list = mbs.getAttributes(name, new String[]{"ProcessCpuLoad"});

		if (list.isEmpty())
			return Double.NaN;

		Attribute att = (Attribute) list.get(0);
		Double value = (Double) att.getValue();

		// usually takes a couple of seconds before we get real values
		if (value == -1.0)
			return Double.NaN;
		// returns a percentage value with 1 decimal point precision
		return ((int) (value * 1000) / 10.0);
	} catch (Exception e) {
		return Double.NaN;
	}
}

開發者ID:twitch4j，項目名稱:twitch4j-chatbot，代碼行數:27，代碼來源:Diagnostics.java

示例3: getProcessCpuLoad

import javax.management.AttributeList; //導入方法依賴的package包/類
public static double getProcessCpuLoad() {
	double cpuLoad;
	try {
		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
		AttributeList list = mbs.getAttributes(name, new String[] { "ProcessCpuLoad" });

		if(list.isEmpty()) {
			return Double.NaN;
		}

		Attribute att = (Attribute) list.get(0);
		Double value = (Double) att.getValue();

		if(value == -1.0) {
			return Double.NaN;
		}

		cpuLoad = value * 100d;
	} catch (InstanceNotFoundException | ReflectionException | MalformedObjectNameException err) {
		cpuLoad = Double.NaN;
	}

	return cpuLoad;
}

開發者ID:Shadorc，項目名稱:Shadbot，代碼行數:26，代碼來源:Utils.java

示例4: getCpuLoad

import javax.management.AttributeList; //導入方法依賴的package包/類
private static double getCpuLoad() {
	// http://stackoverflow.com/questions/18489273/how-to-get-percentage-of-cpu-usage-of-os-from-java
	try {
		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
		AttributeList list = mbs.getAttributes(name, new String[]{ "ProcessCpuLoad" });

		if (list.isEmpty())
			return Double.NaN;

		Attribute att = (Attribute)list.get(0);
		Double value  = (Double)att.getValue();

		// usually takes a couple of seconds before we get real values
		if (value == -1.0)    
			return Double.NaN;
		// returns a percentage value with 1 decimal point precision
		return ((int)(value * 1000) / 10.0);
	} catch(Exception e) {
		return Double.NaN;
	}
}

開發者ID:paul-io，項目名稱:momo-2，代碼行數:23，代碼來源:Diagnostics.java

示例5: getProcessCpuLoad

import javax.management.AttributeList; //導入方法依賴的package包/類
public static double getProcessCpuLoad(MBeanServerConnection mbs)
    throws MalformedObjectNameException, NullPointerException, InstanceNotFoundException,
           ReflectionException, IOException {
  ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
  AttributeList list = mbs.getAttributes(name, new String[]{"ProcessCpuLoad"});

  if (list.isEmpty()) {
    return 0.0;
  }

  Attribute att = (Attribute) list.get(0);
  Double value = (Double) att.getValue();

  // usually takes a couple of seconds before we get real values
  if (value == -1.0) {
    return 0.0;
  }
  // returns a percentage value with 1 decimal point precision
  return ((int) (value * 1000) / 10.0);
}

開發者ID:pinterest，項目名稱:doctorkafka，代碼行數:21，代碼來源:BrokerStatsRetriever.java

示例6: setAttributes

import javax.management.AttributeList; //導入方法依賴的package包/類
public AttributeList setAttributes(AttributeList attributes) 
 {
       // Check attributes is not null to avoid NullPointerException later on
       //
       if (attributes != null) 
       {
        AttributeList resultList = new AttributeList();

        // If attributeNames is empty, nothing more to do
        //
        if (attributes.isEmpty())
            return resultList;

        // For each attribute, try to set it and add to the result list if
        // successfull
        //
        for (Iterator i = attributes.iterator(); i.hasNext();)
        {
            Attribute attr = (Attribute) i.next();
            try
            {
                setAttribute(attr);
                String name = attr.getName();
                Object value = getAttribute(name); 
                resultList.add(new Attribute(name,value));
            } 
            catch(Exception e)
            {
                e.printStackTrace();
            }
        }
        return resultList;
   	}
       return null;
}

開發者ID:costea7，項目名稱:ChronoBike，代碼行數:36，代碼來源:BaseCloseMBean.java

注：本文中的javax.management.AttributeList.isEmpty方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。