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* See LICENSE.md for licensing information.

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

package org.usb4java;

import org.apache.commons.lang3.builder.EqualsBuilder;

import org.apache.commons.lang3.builder.HashCodeBuilder;

/**

* A collection of alternate settings for a particular USB interface.

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

public final class Interface

{

/** The native pointer to the descriptor structure. */

private long interfacePointer;

/**

* Package-private constructor to prevent manual instantiation. Interfaces

* are always created by JNI.

Interface()

{

// Empty

}

/**

* Returns the native pointer.

* @return The native pointer.

public long getPointer()

{

return this.interfacePointer;

}

/**

* Returns the array with interface descriptors. The length of this array is

* determined by the {@link #numAltsetting()} field.

* @return The array with interface descriptors.

public native InterfaceDescriptor[] altsetting();

/**

* Returns the number of alternate settings that belong to this interface.

* @return The number of alternate settings.

public native int numAltsetting();

/**

* Returns a dump of this interface.

* @return The interface dump.

public String dump()

{

final StringBuilder builder = new StringBuilder();

builder.append(String.format(

"Interface:%n" +

" numAltsetting %10d",

this.numAltsetting()));

for (final InterfaceDescriptor intDesc : this.altsetting())

{

builder.append(String.format("%n") + intDesc.dump());

}

return builder.toString();

}

@Override

public int hashCode()

{

return new HashCodeBuilder()

.append(this.altsetting())

.append(this.numAltsetting())

.toHashCode();

}

@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 Interface other = (Interface) obj;

return new EqualsBuilder()

.append(this.altsetting(), other.altsetting())

.append(this.numAltsetting(), other.numAltsetting())

.isEquals();

}

@Override

public String toString()

{

return this.dump();

}

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