Equivalences (Guava: Google Core Libraries for Java

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com.google.common.base
Class Equivalences

java.lang.Object
  com.google.common.base.Equivalences

Contains static factory methods for creating Equivalence instances.

All methods returns serializable instances.

Method Summary
`static Equivalence<Object>`	`equals()` Returns an equivalence that delegates to `Object.equals(java.lang.Object)` and `Object.hashCode()`.
`static Equivalence<Object>`	`identity()` Returns an equivalence that uses `==` to compare values and `System.identityHashCode(Object)` to compute the hash code.
`static Equivalence<Object>`	`nullAwareEquals()` Returns an equivalence that delegates to `Object.equals(java.lang.Object)` and `Object.hashCode()`.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

public static Equivalence<Object> equals()

Returns an equivalence that delegates to Object.equals(java.lang.Object) and Object.hashCode(). Does not support null values.

public static Equivalence<Object> nullAwareEquals()

Returns an equivalence that delegates to Object.equals(java.lang.Object) and Object.hashCode(). Equivalence.equivalent(T, T) returns true if both values are null, or if neither value is null and Object.equals(java.lang.Object) returns true. Equivalence.hash(T) throws a NullPointerException if passed a null value.

public static Equivalence<Object> identity()

Returns an equivalence that uses == to compare values and System.identityHashCode(Object) to compute the hash code. Equivalence.equivalent(T, T) returns true if both values are null, or if neither value is null and == returns true. Equivalence.hash(T) throws a NullPointerException if passed a null value.