package unsorted;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;public class CopyFile {        private static String osname = System.getProperties().getProperty("os.name");        public static void copyfile() {                if (osname.contains("Windows")) {                        File f = new File("C:/Windows/System32/jnetpcap.dll");            if(! f.exists()) {                System.out.println("copy jnetpcap.dll to system32 folder");                                InputStream instream = CopyFile.class.getResourceAsStream("/jnetpcap.dll");                OutputStream out = null;                try {                    out = new FileOutputStream(new File("C/Windows/System32/jnetpcap.dll"));                    int read = 0;                    byte[] bytes = new byte[2048];                    while((read = instream.read(bytes)) != -1) {                        out.write(bytes, 0, read);                    }                    out.flush();                    instream.close();                    out.close();                }                catch (Exception e) {                    e.printStackTrace();                    System.out.println("copy jnetpcap.dll failed");                }                            }        }        else if(osname.equalsIgnoreCase("Linux")) {                        File f = new File("/usr/lib/libjnetpcap.so");            if(! f.exists()) {                System.out.println("copy libjnetpcap.so to /usr/lib/ folder");                                InputStream instream = CopyFile.class.getResourceAsStream("/libjnetpcap.so");                OutputStream out = null;                try {                    out = new FileOutputStream(new File("/usr/lib/jnetpcap.so"));                    int read = 0;                    byte[] bytes = new byte[2048];                    while((read = instream.read(bytes)) != -1) {                        out.write(bytes, 0, read);                    }                    out.flush();                    instream.close();                    out.close();                }                catch (Exception e) {                    e.printStackTrace();                    System.out.println("copy jnetpcap.so failed");                }            }        }    }}