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birt barcode plugin MORE COMPLEX EXAMPLES in Font
CHAPTER 15 MORE COMPLEX EXAMPLES Painting Data Matrix 2d Barcode In None Using Barcode maker for Font Control to generate, create ECC200 image in Font applications. www.OnBarcode.comDraw PDF-417 2d Barcode In None Using Barcode creator for Font Control to generate, create PDF 417 image in Font applications. www.OnBarcode.comimport net.jini.discovery.DiscoveryListener; import net.jini.discovery.DiscoveryEvent; import net.jini.core.lookup.ServiceRegistrar; import net.jini.core.lookup.ServiceTemplate; import net.jini.lookup.entry.Location; import net.jini.core.lookup.ServiceItem; import net.jini.core.lookup.ServiceMatches; import net.jini.core.entry.Entry; /** * TestPrinterDistance.java */ public class TestPrinterDistance implements DiscoveryListener { protected Distance distance = null; protected Object distanceLock = new Object(); protected Vector printers = new Vector(); public static void main(String argv[]) { new TestPrinterDistance(); // stay around long enough to receive replies try { Thread.currentThread().sleep(10000L); } catch(java.lang.InterruptedException e) { // do nothing } } public TestPrinterDistance() { System.setSecurityManager(new RMISecurityManager()); LookupDiscovery discover = null; try { discover = new LookupDiscovery(LookupDiscovery.ALL_GROUPS); } catch(Exception e) { System.err.println(e.toString()); System.exit(1); } discover.addDiscoveryListener(this); } public void discovered(DiscoveryEvent evt) { ServiceRegistrar[] registrars = evt.getRegistrars(); for (int n = 0; n < registrars.length; n++) { System.out.println("Service found"); ServiceRegistrar registrar = registrars[n]; new LookupThread(registrar).start(); } } public void discarded(DiscoveryEvent evt) { EAN / UCC - 14 Encoder In None Using Barcode drawer for Font Control to generate, create GS1-128 image in Font applications. www.OnBarcode.comBarcode Drawer In None Using Barcode encoder for Font Control to generate, create Barcode image in Font applications. www.OnBarcode.comCHAPTER 15 MORE COMPLEX EXAMPLES
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Data Matrix Recognizer In Java Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications. www.OnBarcode.comECC200 Creation In None Using Barcode printer for Software Control to generate, create Data Matrix ECC200 image in Software applications. www.OnBarcode.comServiceTemplate template = new ServiceTemplate(null, classes, null); try { distance = (Distance) registrar.lookup(template); } catch(java.rmi.RemoteException e) { e.printStackTrace(); } } ServiceMatches lookupPrinters() { // look for printers with // wildcard matching on all fields of Location Entry[] entries = new Entry[] {new Location(null, null, null)}; Class[] classes = new Class[1]; try { classes[0] = Class.forName("common.Printer"); } catch(ClassNotFoundException e) { System.err.println("Class not found"); System.exit(1); } ServiceTemplate template = new ServiceTemplate(null, classes, entries); ServiceMatches matches = null; try { matches = registrar.lookup(template, 10); } catch(java.rmi.RemoteException e) { e.printStackTrace(); } return matches; } /** * report on the distance of the printer from * this client */ void reportDistance(ServiceItem item) { Location whereAmI = getMyLocation(); Location whereIsPrinter = getPrinterLocation(item); if (whereIsPrinter != null) { int dist = distance.getDistance(whereAmI, whereIsPrinter); System.out.println("Found a printer at " + dist + " units of length away"); } } Location getMyLocation() { return new Location("1", "1", "Building 1"); } Location getPrinterLocation(ServiceItem item) { Generating UPC-A In None Using Barcode maker for Software Control to generate, create UPC Symbol image in Software applications. www.OnBarcode.comDecoding QR Code 2d Barcode In None Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications. www.OnBarcode.comCHAPTER 15 MORE COMPLEX EXAMPLES
Draw PDF-417 2d Barcode In Visual Basic .NET Using Barcode encoder for Visual Studio .NET Control to generate, create PDF 417 image in .NET framework applications. www.OnBarcode.comRead Code 128 Code Set B In VB.NET Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET applications. www.OnBarcode.comEntry[] entries = item.attributeSets; for (int n = 0; n < entries.length; n++) { if (entries[n] instanceof Location) { return (Location) entries[n]; } } return null; } } } // TestPrinterDistance A number of services will need to be running. At least one distance service will be needed, implementing the interface Distance: package common; import net.jini.lookup.entry.Location; /** * Distance.java */ public interface Distance extends java.io.Serializable { int getDistance(Location loc1, Location loc2); } // Distance The following is an example implementation of a distance service: package complex; import net.jini.lookup.entry.Location; /** * DistanceImpl.java */ public class DistanceImpl implements common.Distance { public DistanceImpl() { } /** * A very naive distance metric */ public int getDistance(Location loc1, Location loc2) { int room1, room2; try { room1 = Integer.parseInt(loc1.room); room2 = Integer.parseInt(loc2.room); } catch(Exception e) { return -1; } int value = room1 - room2; Paint UCC - 12 In Java Using Barcode generator for Android Control to generate, create EAN128 image in Android applications. www.OnBarcode.comReading European Article Number 13 In None Using Barcode reader for Software Control to read, scan read, scan image in Software applications. www.OnBarcode.comCHAPTER 15 MORE COMPLEX EXAMPLES
Make Code 39 Extended In Java Using Barcode encoder for Java Control to generate, create Code 3 of 9 image in Java applications. www.OnBarcode.comPaint UPC - 13 In Visual Studio .NET Using Barcode generator for VS .NET Control to generate, create EAN / UCC - 13 image in Visual Studio .NET applications. www.OnBarcode.comreturn (value > 0 value : -value); } } // DistanceImpl Earlier in this chapter I provided the code for PrinterImpl. A simple program to start up a distance service and two printers is as follows: package complex; import printer.Printer30; import printer.Printer20; import complex.DistanceImpl; import net.jini.lookup.JoinManager; import net.jini.core.lookup.ServiceID; import net.jini.lookup.ServiceIDListener; import net.jini.lease.LeaseRenewalManager; import net.jini.discovery.LookupDiscovery; import net.jini.lookup.entry.Location; import net.jini.core.entry.Entry; import net.jini.discovery.LookupDiscoveryManager; import java.rmi.RMISecurityManager; /** * PrinterServerLocation.java */ public class PrinterServerLocation implements ServiceIDListener { public static void main(String argv[]) { new PrinterServerLocation(); // run forever Object keepAlive = new Object(); synchronized(keepAlive) { try { keepAlive.wait(); } catch(InterruptedException e) { // do nothing } } } public PrinterServerLocation() { System.setSecurityManager(new RMISecurityManager()); JoinManager joinMgr = null; try { LookupDiscoveryManager mgr = new LookupDiscoveryManager(LookupDiscovery.ALL_GROUPS, null /* unicast locators */, null /* DiscoveryListener */); // distance service joinMgr = new JoinManager(new DistanceImpl(), null, Painting UCC-128 In .NET Using Barcode maker for .NET framework Control to generate, create EAN 128 image in VS .NET applications. www.OnBarcode.comQR-Code Maker In Objective-C Using Barcode maker for iPad Control to generate, create QR Code image in iPad applications. www.OnBarcode.com |
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