Java 獲取系統cpu 內存

原文鏈接：https://blog.csdn.net/CallMeV6/article/details/83176840

說明：獲取的數據是操作系統整體的資源占用情況，不是當前 java進程占用的資源

1. 獲取系統CPU占用情況 ：

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必須是1.8及以上的

           返回的值是CPU的百分比，取的是整數值

 

2. 獲取系統內存占用情況 

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為1.6及以上版本

           返回的值是內存的百分比，取的是整數值