Validators and Interceptors - Java EE 7 First Look - page 163

Constraint Supported type Description

This ensures that the value of
the object is null

@Null Object

This ensures that the value of
the object is not null

@NotNull Object

@AssertTrue boolean , Boolean

This ensures that the value of
the object is true

@AssertFalse boolean , Boolean

This ensures that the value of
the object is false

BigDecimal , BigInteger
byte , short , int , long , and
the respective wrappers (such as
Byte and Short )

This ensures that the value of
the object is greater than or
equal to the value specified in
the annotation

@Min

BigDecimal , BigInteger
byte , short , int , long , and
the respective wrappers (such as
Byte and Short )

This ensures that the value of
the object is less than or equal
to the value specified in the
annotation

@Max

@DecimalMin BigDecimal , BigInteger ,
CharSequence

This ensures that the value of
the object is greater than or
equal to the value specified in
the annotation