Class NSNull

java.lang.Object
com.dd.plist.NSObject
com.dd.plist.NSNull
All Implemented Interfaces:
Cloneable, Comparable<NSObject>
public final class NSNull extends NSObject
Internally used representation of the null value for storing it inside dictionaries and sets.

  • Field Details

    • NULL

      private static final NSNull NULL

  • Constructor Details

    • NSNull

      private NSNull()

  • Method Details

    • wrap

      protected static NSObject wrap(NSObject o)
      Returns the specified NSObject if it is not null, or a NSNull instance otherwise.
      Parameters:
      o - The object.
      Returns:
      The non-null object, or a NSNull instance.

    • unwrap

      protected static NSObject unwrap(NSObject o)
      Returns the specified NSObject if it is not a NSNull instance, or null otherwise.
      Parameters:
      o - The object.
      Returns:
      The non-null object, or null.

    • clone

      public NSObject clone()
      Description copied from class: NSObject
      Creates and returns a deep copy of this instance.
      Specified by:
      clone in class NSObject
      Returns:
      A clone of this instance.

    • toJavaObject

      public Object toJavaObject()
      Description copied from class: NSObject
      Converts this NSObject into an equivalent object of the Java Runtime Environment.
      • NSArray objects are converted to arrays.
      • NSDictionary objects are converted to objects extending the Map class.
      • NSSet objects are converted to objects extending the Set class.
      • NSNumber objects are converted to primitive number values (int, long, double or boolean).
      • NSString objects are converted to String objects.
      • NSData objects are converted to byte arrays.
      • NSDate objects are converted to Date objects.
      • UID objects are converted to byte arrays.
      Specified by:
      toJavaObject in class NSObject
      Returns:
      A native java object representing this NSObject's value.

    • toXML

      void toXML(StringBuilder xml, int level)
      Description copied from class: NSObject
      Generates the XML representation of the object (without XML headers or enclosing plist-tags).
      Specified by:
      toXML in class NSObject
      Parameters:
      xml - The StringBuilder onto which the XML representation is appended.
      level - The indentation level of the object.

    • toBinary

      void toBinary(BinaryPropertyListWriter out) throws IOException
      Description copied from class: NSObject
      Generates the binary representation of the object.
      Specified by:
      toBinary in class NSObject
      Parameters:
      out - The output stream to serialize the object to.
      Throws:
      IOException - If an I/O error occurs while writing to the stream or the object structure contains data that cannot be saved.

    • toASCII

      protected void toASCII(StringBuilder ascii, int level)
      Description copied from class: NSObject
      Generates the ASCII representation of this object. The generated ASCII representation does not end with a newline. Complies with the Old-Style ASCII Property Lists definition.
      Specified by:
      toASCII in class NSObject
      Parameters:
      ascii - The StringBuilder onto which the ASCII representation is appended.
      level - The indentation level of the object.

    • toASCIIGnuStep

      protected void toASCIIGnuStep(StringBuilder ascii, int level)
      Description copied from class: NSObject
      Generates the ASCII representation of this object in the GnuStep format. The generated ASCII representation does not end with a newline.
      Specified by:
      toASCIIGnuStep in class NSObject
      Parameters:
      ascii - The StringBuilder onto which the ASCII representation is appended.
      level - The indentation level of the object.

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • compareTo

      public int compareTo(NSObject o)