{"id":1538,"date":"2012-08-25T12:51:33","date_gmt":"2012-08-25T10:51:33","guid":{"rendered":"http:\/\/www.tutego.de\/blog\/javainsel\/?p=1538"},"modified":"2012-08-25T12:51:33","modified_gmt":"2012-08-25T10:51:33","slug":"snippet-netstat-in-java-with-command-line-call","status":"publish","type":"post","link":"https:\/\/www.tutego.de\/blog\/javainsel\/2012\/08\/snippet-netstat-in-java-with-command-line-call\/","title":{"rendered":"Snippet: NETSTAT in Java with command line call"},"content":{"rendered":"
import java.io.IOException;\nimport java.util.*;\nimport java.util.regex.Pattern;\n\npublic<\/span> class<\/span> Netstat\n{\n  public<\/span> static<\/span> class<\/span> Protocoll\n  {\n    public<\/span> String protocoll;\n    public<\/span> String localAddress;\n    public<\/span> String remoteAddress;\n    public<\/span> String status;\n\n    public<\/span> Protocoll( String protocoll, String localAddress, String remoteAddress, String status )\n    {\n      this<\/span>.protocoll = protocoll;\n      this<\/span>.localAddress = localAddress;\n      this<\/span>.remoteAddress = remoteAddress;\n      this<\/span>.status = status;\n    }\n\n    @Override\n    public<\/span> String toString()\n    {\n      return<\/span> String.format( "%-6s %-22s %-22s %s"<\/span>, protocoll, localAddress, remoteAddress, status );\n    }\n  }\n\n  public<\/span> static<\/span> void<\/span> main( String[] args ) throws IOException\n  {\n    for<\/span> ( Protocoll p : netStat() )\n      System.out<\/span>.println( p );\n  }\n\n  public<\/span> static<\/span> Iterable<Protocoll> netStat() throws IOException\n  {\n    Collection<Protocoll> result = new<\/span> ArrayList<>();\n    ProcessBuilder builder = new<\/span> ProcessBuilder( "netstat"<\/span>, "-n"<\/span> );\n    Process p = builder.start();\n    try<\/span> ( Scanner scanner = new<\/span> Scanner( p.getInputStream() ) ) {\n      Pattern pattern = Pattern.compile( "(TCP|UDP)\\\\s+(\\\\S+)\\\\s+(\\\\S+)\\\\s+(\\\\S+)"<\/span> );\n      while<\/span> ( scanner.findWithinHorizon( pattern, 0 ) != null<\/span> )\n        result.add( new<\/span> Protocoll( scanner.match().group( 1 ), scanner.match().group( 2 ), scanner.match().group( 3 ), scanner.match().group( 4 ) ) );\n    }\n    return<\/span> result;\n  }\n}<\/pre>\n