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## org.hibernate.validator
Annotation Type NotNull

    @Documented
    @ValidatorClass(value=NotNullValidator.class)
    @Target(value={METHOD,FIELD})
    @Retention(value=RUNTIME)
    public @interface NotNull

not null constraint

Author:
  Gavin King

Optional Element Summary
`String` | `message`

### message

    public abstract String message

  Default:
    "{validator.notNull}"

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