Java如何读取CPU的数据信息

java获取所有系统信息（CPU、内存、进程等）的代码：
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.util.ArrayList;
import java.util.List;

import mytools.com.sun.management.OperatingSystemMXBean;
import mytools.java.io.File;
import mytools.java.lang.management.ManagementFactory;
/**
* 获取windows系统信息（CPU,内存,文件系统）
* @author libing
*
*/

public class WindowsInfoUtil {
private static final int CPUTIME = 500;
private static final int PERCENT = 100;
private static final int FAULTLENGTH = 10;

public static void main(String[] args) {
System.out.println(getCpuRatioForWindows());
System.out.println(getMemery());
System.out.println(getDisk());
}

//获取内存使用率
public static String getMemery(){
OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();