diff --git a/java/test/ch/ntb/usb/demo/LogBus.java b/java/test/ch/ntb/usb/demo/LogBus.java
new file mode 100644
index 0000000..ade2b9f
--- /dev/null
+++ b/java/test/ch/ntb/usb/demo/LogBus.java
@@ -0,0 +1,41 @@
+/* 
+ * Java libusb wrapper
+ * Copyright (c) 2005-2006 Andreas Schläpfer <libusb@drip.ch>
+ *
+ * This library is covered by the LGPL, read LGPL.txt for details.
+ */
+package ch.ntb.usb.demo;
+
+import ch.ntb.usb.LibusbJava;
+import ch.ntb.usb.Usb_Bus;
+import ch.ntb.usb.Utils;
+
+/**
+ * Initalises Libusb and prints the bus(ses) with attached devices to the
+ * standard out.<br>
+ * 
+ * 
+ * @author schlaepfer
+ * 
+ */
+public class LogBus {
+
+	private static void logBus() {
+		// if you don't use the ch.ntb.usb.Device class you must initialise
+		// Libusb before use
+		LibusbJava.usb_init();
+		LibusbJava.usb_find_busses();
+		LibusbJava.usb_find_devices();
+
+		// retrieve a object tree representing the bus with its devices and
+		// descriptors
+		Usb_Bus bus = LibusbJava.usb_get_busses();
+
+		// log the bus structure to standard out
+		Utils.logBus(bus);
+	}
+
+	public static void main(String[] args) {
+		logBus();
+	}
+}
diff --git a/java/test/ch/ntb/usb/demo/ReadWrite.java b/java/test/ch/ntb/usb/demo/ReadWrite.java
new file mode 100644
index 0000000..f64bd04
--- /dev/null
+++ b/java/test/ch/ntb/usb/demo/ReadWrite.java
@@ -0,0 +1,61 @@
+/* 
+ * Java libusb wrapper
+ * Copyright (c) 2005-2006 Andreas Schläpfer <libusb@drip.ch>
+ *
+ * This library is covered by the LGPL, read LGPL.txt for details.
+ */
+package ch.ntb.usb.demo;
+
+import ch.ntb.usb.Device;
+import ch.ntb.usb.USB;
+import ch.ntb.usb.USBException;
+
+/**
+ * Demo class to demonstrate simple read and write operations to an USB device.<br>
+ * 
+ * @author schlaepfer
+ * 
+ */
+public class ReadWrite {
+
+	private static void logData(byte[] data) {
+		System.out.print("Data: ");
+		for (int i = 0; i < data.length; i++) {
+			System.out.print("0x" + Integer.toHexString(data[i] & 0xff) + " ");
+		}
+		System.out.println();
+	}
+
+	public static void main(String[] args) {
+		// get a device instance with vendor id and product id
+		Device dev = USB.getDevice((short) 0x8235, (short) 0x0222);
+		try {
+			// data to write to the device
+			byte[] data = new byte[] { 0, 1, 2, 3 };
+			// data read from the device
+			byte[] readData = new byte[data.length];
+
+			// open the device with configuration 1, interface 0 and without
+			// altinterface
+			// this will initialise Libusb for you
+			dev.open(1, 0, -1);
+			// write some data to the device
+			// 0x03 is the endpoint address of the OUT endpoint 3 (from PC to
+			// device)
+			dev.writeInterrupt(0x03, data, data.length, 2000, false);
+			// read some data from the device
+			// 0x84 is the endpoint address of the IN endpoint 4 (from PC to
+			// device)
+			// bit 7 (0x80) is set in case of an IN endpoint
+			dev.readInterrupt(0x84, readData, readData.length, 2000, false);
+			// log the data from the device
+			logData(readData);
+			// close the device
+			dev.close();
+		} catch (USBException e) {
+			// if an exception occures during connect or read/write an exception
+			// is thrown
+			e.printStackTrace();
+		}
+	}
+}