@TableField

The @TableField annotation is used in Java to map a field in a Java object to a column in a database table. This annotation is typically used with object-relational mapping (ORM) frameworks, such as Hibernate or MyBatis, that allow Java objects to be persisted in a relational database.

The @TableField annotation can be used to specify various attributes of the mapped column, such as the column name, whether the column is nullable or not, the default value of the column, and so on. For example, the following code demonstrates the use of the @TableField annotation to map the "name" field of a Java object to a column named "user_name" in a database table:

public class User {
    @TableField(column = "user_name", nullable = false)
    private String name;
    // other fields and methods
}

In this example, the "name" field is mapped to a column named "user_name", and the column is declared to be non-nullable. The ORM framework will use this mapping information to automatically generate SQL statements for inserting, updating, and querying the database.