Question

I have recently added a new column (age) to a database table (user). I am using MS Sql server.

I have a java app that is trying to add a new record to this table. The app uses Hibernate to update the table.

I have a POJO called UserModel. The age column is of type int.

My model is defined as follows:

@NotEmpty
@Column(name = "Age", nullable = false, precision = 10)
public Integer getAge() {
    return Age;
}

public void setAge(Integer Age) {
    this.Age = Age;
}

@Transient
public boolean isAgeSet() {
    return getAge() != null;
}

When I try to enter a row, I get the following error message:

java.lang.ClassCastException: java.lang.Integer
at org.hibernate.validator.NotEmptyValidator.isValid(NotEmptyValidator.java:36)

The age is set in Java code as 12345.

Has anyone any idea why this is happening?

Answer 1

@NotEmpty can only be used for String or Collection type properties.

See API documentation.

You are already using nullable = false. That should be enough.