与 JNA 3.5兼容.0.我认为您所使用的示例与该库的最新版本不兼容.

This works with JNA 3.5.0. The example you have isn't compatible with more recent versions of the library, I think.

import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.Tlhelp32;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.win32.W32APIOptions;
import com.sun.jna.Native; 

public class ListProcesses {
    public static void main(String[] args) {
        Kernel32 kernel32 = (Kernel32) Native.loadLibrary(Kernel32.class, W32APIOptions.UNICODE_OPTIONS);
        Tlhelp32.PROCESSENTRY32.ByReference processEntry = new Tlhelp32.PROCESSENTRY32.ByReference();          

        WinNT.HANDLE snapshot = kernel32.CreateToolhelp32Snapshot(Tlhelp32.TH32CS_SNAPPROCESS, new WinDef.DWORD(0));
        try  {
            while (kernel32.Process32Next(snapshot, processEntry)) {             
                System.out.println(processEntry.th32ProcessID + "\t" + Native.toString(processEntry.szExeFile));
            }
        }
        finally {
            kernel32.CloseHandle(snapshot);
        }
    } 
}

另请参阅我的答案在其他地方.