The _Guid class of the com.ms.com package represents globally unique identifiers (GUIDs), which are 128-bit integer values that are used to assign world-wide unique identifiers for COM interfaces and CoClasses.
public final class _Guid { // Constructors public _Guid(byte [] ba); public _Guid(int d1, short d2, short d3, byte b8, byte b9, byte b10, byte b11, byte b12, byte b13, byte b14, byte b15); public _Guid(String str); public _Guid(); // Methods public boolean equals(Object g2); public int hashCode(); public void set(byte [] ba); public void set(String str); public void set(int d1, short d2, short d3, byte b8, byte b9, byte b10, byte b11, byte b12, byte b13, byte b14, byte b15); public byte [] toByteArray(); public String toString(); }