@ValidatorClass( NegativeValueVal idator.class)
@Target(ElementType .METHOD)
@Retention(Retentio nPolicy.RUNTIME)
@Documented

public @interface IsNegative
{
String message() default "the value you have entered is negative";

}

------------ -
NegativeValueValida tor

public class NegativeValueValida tor implements Validator<IsNegative>, Serializable {

public void initialize(IsNegati ve arg0) {
// TODO Auto-generated method stub

}

public boolean isValid(Object value) {

int valueEntered = (Integer) value;

if(valueEntered < 0)
return false;
else
return true;
}

}

public class User implements Serializable {

// id, version, etc. are defined in BaseEntity
private String userName;
private Adres adres;
private int serial;



@IsNegative
public int getSerial() {
return serial;
}
public void setSerial(int serial) {
this.serial = serial;
}
.
.
.
} tarzinda bir User class im var.

public class Adres implements Serializable {

// id, version, etc. are defined in BaseEntity
private int zipcode;



@IsNegative
public int getZipcode() {
return zipcode;
}
public void setZipcode(int zipcode) {
this.zipcode= zipcode;
}
.
.
.
}