ECFieldFp (Java SE 12 & JDK 12 )

java.lang.Object
- java.security.spec.ECFieldFp

All Implemented Interfaces:

ECField
```
public class ECFieldFp
extends Object
implements ECField
```
This immutable class defines an elliptic curve (EC) prime finite field.

Since:

1.5

See Also:

ECField

Constructor Summary

Constructors
Constructor Description

ECFieldFp(BigInteger p)
Creates an elliptic curve prime finite field with the specified prime p.

Method Summary

Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`	Compares this prime finite field for equality with the specified object.
`int`	`getFieldSize()`	Returns the field size in bits which is size of prime p for this prime finite field.
`BigInteger`	`getP()`	Returns the prime `p` of this prime finite field.
`int`	`hashCode()`	Returns a hash code value for this prime finite field.

Methods declared in class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ECFieldFp
```
public ECFieldFp(BigInteger p)
```
    Creates an elliptic curve prime finite field with the specified prime p.
    
    Parameters:
    
    p - the prime.
    
    Throws:
    
    NullPointerException - if p is null.
    
    IllegalArgumentException - if p is not positive.
- Method Detail
  - getFieldSize
```
public int getFieldSize()
```
    Returns the field size in bits which is size of prime p for this prime finite field.
    
    Specified by:
    
    getFieldSize in interface ECField
    
    Returns:
    
    the field size in bits.
  - getP
```
public BigInteger getP()
```
    Returns the prime p of this prime finite field.
    
    Returns:
    
    the prime.
  - equals
```
public boolean equals(Object obj)
```
    Compares this prime finite field for equality with the specified object.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the object to be compared.
    
    Returns:
    
    true if obj is an instance of ECFieldFp and the prime value match, false otherwise.
    
    See Also:
    
    Object.hashCode(), HashMap
  - hashCode
```
public int hashCode()
```
    Returns a hash code value for this prime finite field.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    a hash code value.
    
    See Also:
    
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)