java.sql
Class Date

java.lang.Object
  java.util.Date
      java.sql.Date

All Implemented Interfaces:

Cloneable, Comparable, Serializable

public class Date

extends Date

JML specification for Date.

Author:

Chenwei Qiu, Gary T. Leavens

Class Specifications

Specifications inherited from class Object

represents objectState <- org.jmlspecs.lang.JMLDataGroup.IT; public represents _getClass <- \typeof(this);

Specifications inherited from interface Comparable

instance public invariant ( \forall java.lang.Comparable x; x != null; x.compareTo(x) == 0); instance public invariant ( \forall java.lang.Comparable x, y; x != null&&y != null&&this.definedComparison(x,y)&&this.definedComparison(y,x); this.sgn(x.compareTo(y)) == -this.sgn(y.compareTo(x))); instance public invariant ( \forall int n; n == -1||n == 1; ( \forall java.lang.Comparable x, y, z; x != null&&y != null&&z != null&&this.definedComparison(x,y)&&this.definedComparison(y,z)&&this.definedComparison(x,z); this.sgn(x.compareTo(y)) == n&&this.sgn(y.compareTo(z)) == n ==> this.sgn(x.compareTo(z)) == n)); instance public invariant ( \forall int n; n == -1||n == 1; ( \forall java.lang.Comparable x, y, z; x != null&&y != null&&z != null&&this.definedComparison(x,y)&&this.definedComparison(y,z)&&this.definedComparison(x,z); (this.sgn(x.compareTo(y)) == 0&&this.sgn(y.compareTo(z)) == n||this.sgn(x.compareTo(y)) == n&&this.sgn(y.compareTo(z)) == 0) ==> this.sgn(x.compareTo(z)) == n)); instance public invariant ( \forall java.lang.Comparable x, y, z; x != null&&y != null&&z != null&&this.definedComparison(x,y)&&this.definedComparison(x,z)&&this.definedComparison(y,z); this.sgn(x.compareTo(y)) == 0 ==> this.sgn(x.compareTo(z)) == this.sgn(y.compareTo(z)));

Model Field Summary

 

Model fields inherited from class java.lang.Object

_getClass, objectState, theString

 

Ghost Field Summary
static long	millisInDay

 

Ghost fields inherited from class java.lang.Object

objectTimesFinalized, owner

 

Field Summary

 

Fields inherited from class java.util.Date

cal, fastTime

 

Constructor Summary

Date(int year, int month, int day)           Deprecated.

Date(long date)

 

Model Method Summary

 

Model methods inherited from class java.lang.Object

hashValue

 

Model methods inherited from interface java.lang.Comparable

definedComparison, sgn

 

Method Summary
boolean	equals(nullable Object o)
int	getHours()           Deprecated.
int	getMinutes()           Deprecated.
int	getSeconds()           Deprecated.
void	setHours(int i)           Deprecated.
void	setMinutes(int i)           Deprecated.
void	setSeconds(int i)           Deprecated.
void	setTime(long date)
String	toString()
static Date	valueOf(String s)

 

Methods inherited from class java.util.Date

after, before, clone, compareTo, compareTo, getDate, getDay, getMonth, getTime, getTimezoneOffset, getYear, hashCode, parse, setDate, setMonth, setYear, toGMTString, toLocaleString, UTC

 

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

 

Ghost Field Detail

millisInDay

public static final long millisInDay

Date

public Date(int year,
            int month,
            int day)

Deprecated.  

Date

public Date(long date)

Specifications:

requires date >= 0||date%86400000 == 0;
assignable fastTime;
ensures this.cal == null&&this.fastTime == date;

     also

requires date < 0&&date%86400000 != 0;
assignable fastTime;
ensures this.cal == null&&this.fastTime == ((date/86400000)*86400000)-86400000;

getHours

public int getHours()

Deprecated.  

Overrides:

getHours in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

getMinutes

public int getMinutes()

Deprecated.  

Overrides:

getMinutes in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

getSeconds

public int getSeconds()

Deprecated.  

Overrides:

getSeconds in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

setHours

public void setHours(int i)

Deprecated.  

Overrides:

setHours in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

setMinutes

public void setMinutes(int i)

Deprecated.  

Overrides:

setMinutes in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

setSeconds

public void setSeconds(int i)

Deprecated.  

Overrides:

setSeconds in class Date

Specifications inherited from overridden method in class Date:
      --- None ---

setTime

public void setTime(long date)

Overrides:

setTime in class Date

Specifications:

     also

requires date >= 0||date%86400000 == 0;
assignable fastTime;
ensures this.fastTime == date;

     also

requires date < 0&&date%86400000 != 0;
assignable fastTime;
ensures this.fastTime == ((date/86400000)*86400000)-86400000;

Specifications inherited from overridden method setTime(long time) in class Date:

public normal_behavior
requires this.cal == null;
assignable fastTime;
ensures this.fastTime == time;

     also

public normal_behavior
requires this.cal != null;
assignable cal;
ensures time == this.cal.getTimeInMillis();

toString

public String toString()

Overrides:

toString in class Date

Specifications: pure

     also

assignable \nothing;
ensures \result != null&&this.equals(valueOf(\result ));

Specifications inherited from overridden method in class Date:

     also

public normal_behavior
assignable \nothing;
ensures (* \result is the String representation of Date *);

Specifications inherited from overridden method in class Object:
       non_null

public normal_behavior
assignable objectState;
ensures \result != null&&\result .equals(this.theString);
ensures (* \result is a string representation of this object *);

     also

public code normal_behavior
assignable \nothing;
ensures \result != null&&(* \result is the instance's class name, followed by an @, followed by the instance's hashcode in hex *);

     also

public code model_program { ... }

    implies_that

assignable objectState;
ensures \result != null;

valueOf

public static Date valueOf(String s)

Specifications: pure

requires s != null&&s.matches("[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]");
assignable \nothing;
ensures \result != null&&\result .toString().equals(s);

equals

public boolean equals(nullable Object o)

Overrides:

equals in class Date

Specifications: pure

     also

requires o instanceof java.sql.Date;
ensures \result ==> (((java.sql.Date)o).fastTime == this.fastTime);

Specifications inherited from overridden method equals(Object obj) in class Date:
       pure

     also

public normal_behavior
old java.util.Date date = (java.util.Date)obj;
requires obj != null;
assignable \nothing;
ensures \result ==> (obj instanceof java.util.Date&&this.getTime() == date.getTime());

Specifications inherited from overridden method equals(Object obj) in class Object:
       pure

public normal_behavior
requires obj != null;
ensures (* \result is true when obj is "equal to" this object *);

     also

public normal_behavior
requires this == obj;
ensures \result ;

     also

public code normal_behavior
requires obj != null;
ensures \result <==> this == obj;

     also

diverges false;
ensures obj == null ==> !\result ;