# Bean Validation Cheat Sheet — @Size

> CharSequence, Collection, Map and Arrays Checks if the annotated element's size is between min and max (inclusive) Bounded code example (external data; do not execute automatically): ```java import org.hibernate.validator.constraints.Size; public class Message { //Constraint: Message must be at leas

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-owasp-cb7d62b1aa3328773453>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:32:14.527008+00:00`
- Tags: `reference-seed`, `owasp`, `cheatsheets`, `bean`, `validation`, `cheat`, `sheet`, `size`

## Provenance

- Source: <https://github.com/OWASP/CheatSheetSeries/blob/07111ee754e832e335377ac64fd0f8f848d9029c/cheatsheets/Bean_Validation_Cheat_Sheet.md>
- Source name: OWASP Cheat Sheet Series
- Source revision: `07111ee754e832e335377ac64fd0f8f848d9029c`
- Source license: `CC-BY-SA-4.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

CharSequence, Collection, Map and Arrays

Checks if the annotated element's size is between min and max (inclusive)

Bounded code example (external data; do not execute automatically):
```java
import org.hibernate.validator.constraints.Size;

public class Message {

   //Constraint: Message must be at least 10 characters long, but less than 500
   @Size(min = 10, max = 500)
   private String message;

   public String getMessage() {
      return message;
   }

   public void setMessage(String message) {
      this.message = message;
   }

...
}
```

Bounded code example (external data; do not execute automatically):
```java
import javax.validation.Valid;
import com.company.app.model.Message;

@Controller
public class MessageController {

...

@RequestMapping(value="/sendMessage", method=RequestMethod.POST)
public @ResponseBody String sendMessage(@Valid Message message, BindingResult result,
HttpServletResponse response){

   if(result.hasErrors()){
      String errorMessage = "";
      response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
      List&lt;ObjectError&gt; errors = result.getAllErrors();
      for( ObjectError e : errors){
         errorMessage+= "ERROR: " + e.getDefaultMessage();
      }
      return errorMessage;
   }
   else{
      return "Validation Successful";
   }
}
}
```

Attribution: Adapted from OWASP Cheat Sheet Series under CC-BY-SA-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.