java determine number of cpu cores

1int cores = Runtime.getRuntime().availableProcessors();
2

1private int getNumberOfCPUCores() {
2    OSValidator osValidator = new OSValidator();
3    String command = "";
4    if(osValidator.isMac()){
5        command = "sysctl -n machdep.cpu.core_count";
6    }else if(osValidator.isUnix()){
7        command = "lscpu";
8    }else if(osValidator.isWindows()){
9        command = "cmd /C WMIC CPU Get /Format:List";
10    }
11    Process process = null;
12    int numberOfCores = 0;
13    int sockets = 0;
14    try {
15        if(osValidator.isMac()){
16            String[] cmd = { "/bin/sh", "-c", command};
17            process = Runtime.getRuntime().exec(cmd);
18        }else{
19            process = Runtime.getRuntime().exec(command);
20        }
21    } catch (IOException e) {
22        e.printStackTrace();
23    }
24
25    BufferedReader reader = new BufferedReader(
26            new InputStreamReader(process.getInputStream()));
27    String line;
28
29    try {
30        while ((line = reader.readLine()) != null) {
31            if(osValidator.isMac()){
32                numberOfCores = line.length() > 0 ? Integer.parseInt(line) : 0;
33            }else if (osValidator.isUnix()) {
34                if (line.contains("Core(s) per socket:")) {
35                    numberOfCores = Integer.parseInt(line.split("\\s+")[line.split("\\s+").length - 1]);
36                }
37                if(line.contains("Socket(s):")){
38                    sockets = Integer.parseInt(line.split("\\s+")[line.split("\\s+").length - 1]);
39                }
40            } else if (osValidator.isWindows()) {
41                if (line.contains("NumberOfCores")) {
42                    numberOfCores = Integer.parseInt(line.split("=")[1]);
43                }
44            }
45        }
46    } catch (IOException e) {
47        e.printStackTrace();
48    }
49    if(osValidator.isUnix()){
50        return numberOfCores * sockets;
51    }
52    return numberOfCores;
53}
54