61.What is the purpose of @Key Annotation annotation?

This annotation sets the Key for type conversion. The Key annotation must be applied at field or method level.
@ Key( value = java.lang.Long.class )
private Map userMap;

62.What is the purpose of @KeyProperty Annotation annotation?

This annotation sets the KeyProperty for type conversion. The KeyProperty annotation must be applied at field or method level.
@ KeyProperty( value = "userNam e" )
protected List users = null;

63.What is the purpose of @TypeConversion Annotation annotation?

This annotation annotation is used for class and application wide conversion rules. The TypeConversion annotation can be applied at property and method level.
@ TypeConversion(rule = ConversionRule.COLLECTION,
converter = "java.util.String")
public void setUsers( List users ) {
this.users = users;
}

64.

65.?

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80.?