java - Validate Bean inside a Bean -

i have following beans

public class mymodel {   @notnull   @notempty   private string name;    @notnull   @notempty   private int age;    //how validate this?   private mysubmodel submodel; }  public class mysubmodel{    private string subname;  } 

then use @valid annotation validate controller side.

thank you

you can define own custom validation bean validation (jsr-303), example here simple custom zip code validation, annotating custom annotation can validate:

@documented @constraint(validatedby = zipcodevalidator.class) @target(elementtype.field) @retention(retentionpolicy.runtime) public @interface zipcode {     string message() default "zip code must 5 numeric characters";      class<?>[] groups() default {};      class<?>[] payload() default {}; } 

and custom validation class, instead of , can use custom beans <yourannotationclassname,typewhichisbeingvalidated>

public class zipcodevalidator implements constraintvalidator<zipcode, string> {      @override     public void initialize(zipcode zipcode) {     }      @override     public boolean isvalid(string string, constraintvalidatorcontext context) {         if (string.length() != 5)             return false;         (char c : string.tochararray()) {             if (!character.isdigit(c))                 return false;         }         return true;     }  } 

and here usage of it:

public class address{    @zipcode   private string zip;  }