Pcaps { public static DataLinkType dataLinkNameToVal(String name) throws PcapNativeException { if (name == null) { StringBuilder sb = new StringBuilder(); sb.append("name: ").append(name); throw new NullPointerException(sb.toString()); } int rc = NativeMappings.pcap_datalink_name_to_val(name); if (rc < 0) { throw new PcapNativeException( "Failed to convert the data link name to the value: " + name, rc); } return DataLinkType.getInstance(rc); } private  Pcaps(); static List<PcapNetworkInterface> findAllDevs(); static PcapNetworkInterface getDevByAddress(InetAddress addr); static PcapNetworkInterface getDevByName(String name); static String lookupDev(); static Inet4NetworkAddress lookupNet(String devName); static PcapHandle openOffline(String filePath); static PcapHandle openOffline(String filePath, TimestampPrecision precision); static PcapHandle openDead(DataLinkType dlt, int snaplen); static PcapHandle openDead(DataLinkType dlt, int snaplen, TimestampPrecision precision); static BpfProgram compileFilter(
      int snaplen,
      DataLinkType dlt,
      String bpfExpression,
      BpfCompileMode mode,
      Inet4Address netmask); static DataLinkType dataLinkNameToVal(String name); static String dataLinkTypeToName(DataLinkType dlt); static String dataLinkValToName(int dataLinkVal); static String dataLinkTypeToDescription(DataLinkType dlt); static String dataLinkValToDescription(int dataLinkVal); static String strError(int error); static String libVersion(); static String toBpfString(InetAddress inetAddr); static String toBpfString(MacAddress macAddr);  }
@Test public void testDataLinkNameToVal() throws Exception { DataLinkType dlt = Pcaps.dataLinkNameToVal("EN10MB"); assertEquals(DataLinkType.EN10MB, dlt); dlt = Pcaps.dataLinkNameToVal("PPP"); assertEquals(DataLinkType.PPP, dlt); }