Java 获取系统cpu 内存

Posted 2021-03-25 lshan

原文链接：https://blog.csdn.net/CallMeV6/article/details/83176840

说明：获取的数据是操作系统整体的资源占用情况，不是当前 java进程占用的资源

1. 获取系统CPU占用情况 ：

import java.lang.management.ManagementFactory;
import com.sun.management.OperatingSystemMXBean;
 
private static OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
public static int cpuLoad() {
    double cpuLoad = osmxb.getSystemCpuLoad();
    int percentCpuLoad = (int) (cpuLoad * 100);
    return percentCpuLoad;

}

 

注意：JDK必须是1.8及以上的

           返回的值是CPU的百分比，取的是整数值

 

2. 获取系统内存占用情况 

import java.lang.management.ManagementFactory;
import com.sun.management.OperatingSystemMXBean;
 
private static OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
public static int memoryLoad() {
    double totalvirtualMemory = osmxb.getTotalPhysicalMemorySize();
    double freePhysicalMemorySize = osmxb.getFreePhysicalMemorySize();
        
    double value = freePhysicalMemorySize/totalvirtualMemory;
    int percentMemoryLoad = (int) ((1-value)*100);
    return percentMemoryLoad;

}

注意：JDK为1.6及以上版本

           返回的值是内存的百分比，取的是整数值