myhw2.data

Interface Video

All Superinterfaces:

java.lang.Comparable<Video>

All Known Implementing Classes:

VideoObj

public interface Video
extends java.lang.Comparable<Video>

An immutable video object.

Comprises a triple: title, year, director.

See Also:

Class Type: Immutable Data Class

Object Invariant:

• title is non-null, no leading or final spaces, not empty string
• year is greater than 1800, less than 5000
• director is non-null, no leading or final spaces, not empty string

Method Summary

Modifier and Type	Method and Description
int	compareTo(Video that) Compares the attributes of this object with those of thatObject, in the following order: title, year, director.
java.lang.String	director() Return the value of the attribute.
boolean	equals(java.lang.Object thatObject) Compare the attributes of this object with those of thatObject.
int	hashCode() Return a hash code value for this object using the algorithm from Bloch: fields are added in the following order: title, year, director.
java.lang.String	title() Return the value of the attribute.
java.lang.String	toString() Return a string representation of the object in the following format: "title (year) : director".
int	year() Return the value of the attribute.

Method Detail

director

java.lang.String director()

Return the value of the attribute.

title

java.lang.String title()

Return the value of the attribute.

year

int year()

Return the value of the attribute.

equals

boolean equals(java.lang.Object thatObject)

Compare the attributes of this object with those of thatObject.

Overrides:

equals in class java.lang.Object

Parameters:

thatObject - the Object to be compared.

Returns:

true if this object is the same as the obj argument; false otherwise.

hashCode

int hashCode()

Return a hash code value for this object using the algorithm from Bloch: fields are added in the following order: title, year, director.

Overrides:

hashCode in class java.lang.Object

compareTo

int compareTo(Video that)

Compares the attributes of this object with those of thatObject, in the following order: title, year, director.

Specified by:

compareTo in interface java.lang.Comparable<Video>

Parameters:

that - the Video to be compared.

Returns:

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than that object.

toString

java.lang.String toString()

Return a string representation of the object in the following format: "title (year) : director".

Overrides:

toString in class java.lang.Object