Added in API level 1

Summary: Ctors | Methods | Inherited Methods

Timestamp

public class Timestamp
extends Date

java.lang.Object
↳	java.util.Date
	↳	java.sql.Timestamp

A thin wrapper around java.util.Date that allows the JDBC API to identify this as an SQL TIMESTAMP value. It adds the ability to hold the SQL TIMESTAMP fractional seconds value, by allowing the specification of fractional seconds to a precision of nanoseconds. A Timestamp also provides formatting and parsing operations to support the JDBC escape syntax for timestamp values.

The precision of a Timestamp object is calculated to be either:

19 , which is the number of characters in yyyy-mm-dd hh:mm:ss
20 + s , which is the number of characters in the yyyy-mm-dd hh:mm:ss.[fff...] and s represents the scale of the given Timestamp, its fractional seconds precision.

Note: This type is a composite of a java.util.Date and a separate nanoseconds value. Only integral seconds are stored in the java.util.Date component. The fractional seconds - the nanos - are separate. The Timestamp.equals(Object) method never returns true when passed an object that isn't an instance of java.sql.Timestamp, because the nanos component of a date is unknown. As a result, the Timestamp.equals(Object) method is not symmetric with respect to the java.util.Date.equals(Object) method. Also, the hashCode method uses the underlying java.util.Date implementation and therefore does not include nanos in its computation.

Due to the differences between the Timestamp class and the java.util.Date class mentioned above, it is recommended that code not view Timestamp values generically as an instance of java.util.Date. The inheritance relationship between Timestamp and java.util.Date really denotes implementation inheritance, and not type inheritance.

Summary

Public constructors
`Timestamp(int year, int month, int date, int hour, int minute, int second, int nano)` This constructor is deprecated. instead use the constructor `Timestamp(long millis)`
`Timestamp(long time)` Constructs a `Timestamp` object using a milliseconds time value.

Public methods
`boolean`	`after(Timestamp ts)` Indicates whether this `Timestamp` object is later than the given `Timestamp` object.
`boolean`	`before(Timestamp ts)` Indicates whether this `Timestamp` object is earlier than the given `Timestamp` object.
`int`	`compareTo(Date o)` Compares this `Timestamp` object to the given `Date` object.
`int`	`compareTo(Timestamp ts)` Compares this `Timestamp` object to the given `Timestamp` object.
`boolean`	`equals(Timestamp ts)` Tests to see if this `Timestamp` object is equal to the given `Timestamp` object.
`boolean`	`equals(Object ts)` Tests to see if this `Timestamp` object is equal to the given object.
`int`	`getNanos()` Gets this `Timestamp` object's `nanos` value.
`long`	`getTime()` Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this `Timestamp` object.
`int`	`hashCode()` Returns a hash code value for this object. The `hashCode` method uses the underlying `java.util.Date` implementation and therefore does not include nanos in its computation.
`void`	`setNanos(int n)` Sets this `Timestamp` object's `nanos` field to the given value.
`void`	`setTime(long time)` Sets this `Timestamp` object to represent a point in time that is `time` milliseconds after January 1, 1970 00:00:00 GMT.
`String`	`toString()` Formats a timestamp in JDBC timestamp escape format.
`static Timestamp`	`valueOf(String s)` Converts a `String` object in JDBC timestamp escape format to a `Timestamp` value.

Inherited methods

From class


        
          java.util.Date

`static long`	`UTC(int year, int month, int date, int hrs, int min, int sec)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(year + 1900, month, date, hrs, min, sec)` or `GregorianCalendar(year + 1900, month, date, hrs, min, sec)`, using a UTC `TimeZone`, followed by `Calendar.getTime().getTime()`.
`boolean`	`after(Date when)` Tests if this date is after the specified date.
`boolean`	`before(Date when)` Tests if this date is before the specified date.
`Object`	`clone()` Return a copy of this object.
`int`	`compareTo(Date anotherDate)` Compares two Dates for ordering.
`boolean`	`equals(Object obj)` Compares two dates for equality.
`static Date`	`from(Instant instant)` Obtains an instance of `Date` from an `Instant` object.
`int`	`getDate()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.DAY_OF_MONTH)`.
`int`	`getDay()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.DAY_OF_WEEK)`.
`int`	`getHours()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.HOUR_OF_DAY)`.
`int`	`getMinutes()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.MINUTE)`.
`int`	`getMonth()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.MONTH)`.
`int`	`getSeconds()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.SECOND)`.
`long`	`getTime()` Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this `Date` object.
`int`	`getTimezoneOffset()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `-(Calendar.get(Calendar.ZONE_OFFSET) + Calendar.get(Calendar.DST_OFFSET)) / (60 1000)`.*
`int`	`getYear()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.get(Calendar.YEAR) - 1900`.
`int`	`hashCode()` Returns a hash code value for this object.
`static long`	`parse(String s)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `DateFormat.parse(String s)`.
`void`	`setDate(int date)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.DAY_OF_MONTH, int date)`.
`void`	`setHours(int hours)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.HOUR_OF_DAY, int hours)`.
`void`	`setMinutes(int minutes)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.MINUTE, int minutes)`.
`void`	`setMonth(int month)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.MONTH, int month)`.
`void`	`setSeconds(int seconds)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.SECOND, int seconds)`.
`void`	`setTime(long time)` Sets this `Date` object to represent a point in time that is `time` milliseconds after January 1, 1970 00:00:00 GMT.
`void`	`setYear(int year)` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `Calendar.set(Calendar.YEAR, year + 1900)`.
`String`	`toGMTString()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `DateFormat.format(Date date)`, using a GMT `TimeZone`.
`Instant`	`toInstant()` Converts this `Date` object to an `Instant`.
`String`	`toLocaleString()` This method was deprecated in API level 15. As of JDK version 1.1, replaced by `DateFormat.format(Date date)`.
`String`	`toString()` Converts this `Date` object to a `String` of the form: dow mon dd hh:mm:ss zzz yyyy where: `dow` is the day of the week (`Sun, Mon, Tue, Wed, Thu, Fri, Sat`).

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          java.lang.Comparable


      compareTo(Date o)

Compares this object with the specified object for order.

Public constructors

Timestamp

Added in API level 1

public Timestamp (int year, 
                int month, 
                int date, 
                int hour, 
                int minute, 
                int second, 
                int nano)

This constructor is deprecated.
instead use the constructor Timestamp(long millis)

Constructs a Timestamp object initialized with the given values.

Parameters
`year`	`int`: the year minus 1900
`month`	`int`: 0 to 11
`date`	`int`: 1 to 31
`hour`	`int`: 0 to 23
`minute`	`int`: 0 to 59
`second`	`int`: 0 to 59
`nano`	`int`: 0 to 999,999,999

Throws
`IllegalArgumentException`	if the nano argument is out of bounds

Timestamp

Added in API level 1

public Timestamp (long time)

Constructs a Timestamp object using a milliseconds time value. The integral seconds are stored in the underlying date value; the fractional seconds are stored in the nanos field of the Timestamp object.

Parameters
`time`	`long`: milliseconds since January 1, 1970, 00:00:00 GMT. A negative number is the number of milliseconds before January 1, 1970, 00:00:00 GMT.

See also:

Calendar

Public methods

after

Added in API level 1

public boolean after (Timestamp ts)

Indicates whether this Timestamp object is later than the given Timestamp object.

Parameters
`ts`	`Timestamp`: the `Timestamp` value to compare with

Returns
`boolean`	`true` if this `Timestamp` object is later; `false` otherwise

before

Added in API level 1

public boolean before (Timestamp ts)

Indicates whether this Timestamp object is earlier than the given Timestamp object.

Parameters
`ts`	`Timestamp`: the `Timestamp` value to compare with

Returns
`boolean`	`true` if this `Timestamp` object is earlier; `false` otherwise

compareTo

Added in API level 1

public int compareTo (Date o)

Compares this Timestamp object to the given Date object.

Parameters
`o`	`Date`: the `Date` to be compared to this `Timestamp` object

Returns
`int`	the value `0` if this `Timestamp` object and the given object are equal; a value less than `0` if this `Timestamp` object is before the given argument; and a value greater than `0` if this `Timestamp` object is after the given argument.

compareTo

Added in API level 1

public int compareTo (Timestamp ts)

Compares this Timestamp object to the given Timestamp object.

Parameters
`ts`	`Timestamp`: the `Timestamp` object to be compared to this `Timestamp` object

Returns
`int`	the value `0` if the two `Timestamp` objects are equal; a value less than `0` if this `Timestamp` object is before the given argument; and a value greater than `0` if this `Timestamp` object is after the given argument.

equals

Added in API level 1

public boolean equals (Timestamp ts)

Tests to see if this Timestamp object is equal to the given Timestamp object.

Parameters
`ts`	`Timestamp`: the `Timestamp` value to compare with

Returns
`boolean`	`true` if the given `Timestamp` object is equal to this `Timestamp` object; `false` otherwise

equals

Added in API level 1

public boolean equals (Object ts)

Tests to see if this Timestamp object is equal to the given object. This version of the method equals has been added to fix the incorrect signature of Timestamp.equals(Timestamp) and to preserve backward compatibility with existing class files. Note: This method is not symmetric with respect to the equals(Object) method in the base class.

Parameters
`ts`	`Object`: the `Object` value to compare with

Returns
`boolean`	`true` if the given `Object` is an instance of a `Timestamp` that is equal to this `Timestamp` object; `false` otherwise

getNanos

Added in API level 1

public int getNanos ()

Gets this Timestamp object's nanos value.

Returns
`int`	this `Timestamp` object's fractional seconds component

See also:

setNanos(int)

getTime

Added in API level 1

public long getTime ()

Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Timestamp object.

Returns
`long`	the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this date.

See also:

setTime(long)

hashCode

Added in API level 1

public int hashCode ()

Returns a hash code value for this object. The result is the exclusive OR of the two halves of the primitive long value returned by the Date.getTime method. That is, the hash code is the value of the expression:

(int)(this.getTime()^(this.getTime() >>> 32))

The hashCode method uses the underlying java.util.Date implementation and therefore does not include nanos in its computation.

Returns
`int`	a hash code value for this object.

setNanos

Added in API level 1

public void setNanos (int n)

Sets this Timestamp object's nanos field to the given value.

Parameters
`n`	`int`: the new fractional seconds component

Throws
`IllegalArgumentException`	if the given argument is greater than 999999999 or less than 0

See also:

getNanos()

setTime

Added in API level 1

public void setTime (long time)

Sets this Timestamp object to represent a point in time that is time milliseconds after January 1, 1970 00:00:00 GMT.

Parameters
`time`	`long`: the number of milliseconds.

See also:

toString

Added in API level 1

public String toString ()

Formats a timestamp in JDBC timestamp escape format. yyyy-mm-dd hh:mm:ss.fffffffff, where ffffffffff indicates nanoseconds.

Returns
`String`	a `String` object in `yyyy-mm-dd hh:mm:ss.fffffffff` format

valueOf

Added in API level 1

public static Timestamp valueOf (String s)

Converts a String object in JDBC timestamp escape format to a Timestamp value.

Parameters
`s`	`String`: timestamp in format `yyyy-[m]m-[d]d hh:mm:ss[.f...]`. The fractional seconds may be omitted. The leading zero for `mm` and `dd` may also be omitted.

Returns
`Timestamp`	corresponding `Timestamp` value

Throws
`IllegalArgumentException`	if the given argument does not have the format `yyyy-[m]m-[d]d hh:mm:ss[.f...]`