1 files changed, 50 insertions, 0 deletions
diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing2604.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2604.java
new file mode 100644
index 0000000..0a9568b
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2604.java
@@ -0,0 +1,50 @@
+/* Listing2604.java */
+
+import java.util.*;
+import java.io.*;
+import javax.comm.*;
+
+public class Listing2604
+{
+  public static void printHello(Writer out)
+  throws IOException
+  {
+    String s = "Hello LPT1 World";
+    s += " " + s + " " + s;
+    for (int i = 1; i <= 50; ++i) {
+      out.write(s.substring(0, i) + "\r\n");
+    }
+    out.write("\f");
+  }
+
+  public static void main(String[] args)
+  {
+    Enumeration en = CommPortIdentifier.getPortIdentifiers();
+    while (en.hasMoreElements()) {
+      CommPortIdentifier cpi = (CommPortIdentifier)en.nextElement();
+      if (cpi.getPortType() == CommPortIdentifier.PORT_PARALLEL) {
+        if (cpi.getName().equals("LPT1")) {
+          try {
+            ParallelPort lpt1 = (ParallelPort)cpi.open(
+              "LPT1Test",
+              1000
+            );
+            OutputStreamWriter out = new OutputStreamWriter(
+              lpt1.getOutputStream()
+            );
+            printHello(out);
+            out.close();
+            lpt1.close();
+            System.exit(0);
+          } catch (PortInUseException e) {
+            System.err.println(e.toString());
+            System.exit(1);
+          } catch (IOException e) {
+            System.err.println(e.toString());
+            System.exit(1);
+          }
+        }
+      }
+    }
+  }
+}
+\ No newline at end of file