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ECPoint

public class ECPoint
extends Object

java.lang.Object
↳	java.security.spec.ECPoint

This immutable class represents a point on an elliptic curve (EC) in affine coordinates. Other coordinate systems can extend this class to represent this point in other coordinates.

Summary

Fields
`public static final ECPoint`	`POINT_INFINITY` This defines the point at infinity.

Public constructors
`ECPoint(BigInteger x, BigInteger y)` Creates an ECPoint from the specified affine x-coordinate `x` and affine y-coordinate `y`.

Public methods
`boolean`	`equals(Object obj)` Compares this elliptic curve point for equality with the specified object.
`BigInteger`	`getAffineX()` Returns the affine x-coordinate `x`.
`BigInteger`	`getAffineY()` Returns the affine y-coordinate `y`.
`int`	`hashCode()` Returns a hash code value for this elliptic curve point.

Inherited methods

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 timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Fields

POINT_INFINITY

public static final ECPoint POINT_INFINITY

This defines the point at infinity.

Public constructors

ECPoint

public ECPoint (BigInteger x, 
                BigInteger y)

Creates an ECPoint from the specified affine x-coordinate x and affine y-coordinate y.

Parameters
`x`	`BigInteger`: the affine x-coordinate.
`y`	`BigInteger`: the affine y-coordinate.

Throws
`NullPointerException`	if `x` or `y` is null.

Public methods

equals

public boolean equals (Object obj)

Compares this elliptic curve point for equality with the specified object.

Parameters
`obj`	`Object`: the object to be compared.

Returns
`boolean`	true if `obj` is an instance of ECPoint and the affine coordinates match, false otherwise.

getAffineX

public BigInteger getAffineX ()

Returns the affine x-coordinate x. Note: POINT_INFINITY has a null affine x-coordinate.

Returns
`BigInteger`	the affine x-coordinate.

getAffineY

public BigInteger getAffineY ()

Returns the affine y-coordinate y. Note: POINT_INFINITY has a null affine y-coordinate.

Returns
`BigInteger`	the affine y-coordinate.

hashCode

public int hashCode ()

Returns a hash code value for this elliptic curve point.

Returns
`int`	a hash code value.

Interfaces

Classes

Exceptions

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ECPoint

Summary

Fields

Public constructors

Public methods

Inherited methods

Fields

POINT_INFINITY

Public constructors

ECPoint

Public methods

equals

getAffineX

getAffineY

hashCode