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* See LICENSE.md for licensing information.

* Based on libusb <http://libusb.info/>:

package org.usb4java;

import java.util.Iterator;

/**

* List of devices as returned by

* {@link LibUsb#getDeviceList(Context, DeviceList)}.

* @author Klaus Reimer (k@ailis.de)

public final class DeviceList implements Iterable<Device>

{

/** The native pointer to the devices array. */

private long deviceListPointer;

/** The number of devices in the list. */

private int size;

/**

* Constructs a new device list. Must be passed to

* {@link LibUsb#getDeviceList(Context, DeviceList)} before using it.

public DeviceList()

{

// Empty

}

/**

* Returns the native pointer.

* @return The native pointer.

public long getPointer()

{

return this.deviceListPointer;

}

/**

* Returns the number of devices in the list.

* @return The number of devices in the list.

public int getSize()

{

return this.size;

}

/**

* Returns the device with the specified index.

* @param index

* The device index.

* @return The device or null when index is out of bounds.

public native Device get(final int index);

@Override

public Iterator<Device> iterator()

{

return new DeviceListIterator(this);

}

@Override

public int hashCode()

{

final int prime = 31;

int result = 1;

result = (prime * result)

+ (int) (this.deviceListPointer ^ (this.deviceListPointer >>> 32));

return result;

}

@Override

public boolean equals(final Object obj)

{

if (this == obj)

{

return true;

}

if (obj == null)

{

return false;

}

if (this.getClass() != obj.getClass())

{

return false;

}

final DeviceList other = (DeviceList) obj;

return this.deviceListPointer == other.deviceListPointer;

}

@Override

public String toString()

{

return String.format("libusb device list 0x%x with size %d",

this.deviceListPointer, this.size);

}

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