The use of @MappedSuperclass

Entity class Baseentity.java

Package com. Rock. CFT. Hibernate;

Import java. Util. Date;

Import javax. Persistence. Generatedvalue;
Import javax. Persistence. GenerationType;
Import javax. Persistence. Id;
Import javax. Persistence. Mappedsuperclass;

//@MappedSuperclassUsed on top of the parent class. This callout is added when the class is definitely a parent class. If you change to @entity, after inheritance, multiple classes inherit, only one table is generated, not multiple inheritance, and multiple tables are generated
@MappedSuperclass
Public Abstract Class BaseEntity {
Private IntegerId;Database primary Key
Private DateCreationTime;Creation time
Private DateModificationtime;Modification time

@Id
@GeneratedValue(Strategy= GenerationType.AUTO)
Public IntegerGetId() {
ReturnId;
}
Public voidSetId(IntegerId) {
This.Id=Id;
}
Public DateGetCreationTime() {
ReturnCreationTime;
}
Public voidSetcreationtime(DateCreationTime) {
This.CreationTime=CreationTime;
}
public date Getmodificationtime () {
   Modificationtime  }
 public void (date Modificationtime {
  . Modificationtime = Modificationtime  }

}

Entity class Test_no1.java

Package com. Rock. CFT. Test. Model;

import Java.. Serializable import Java.. Date

import Javax.. Column import Javax.. Entity import Javax.. Table

Import com. Rock. CFT. Hibernate. BaseEntity;

@Entity
@Table (name= "Test_no2" )
public class test_ No1 extends baseentityimplements serializable{
 

 private string Name  private int age< Span class= "pun",

Public StringGetName() {
ReturnName;
}
Public voidSetName(StringName) {
This.Name=Name;
}
 public int () {
   return Age &NBSP;}
 public void (int Age) {
  this.= Age &NBSP;}
&NBSP;&NBSP;

}

Entity class Test_no2.java

Package com. Rock. CFT. Test. Model;

Import java. Io. Serializable;
Import java. Util. Date;

import Javax.. Column import Javax.. Entity import Javax.. Table

Import com. Rock. CFT. Hibernate. BaseEntity;

@Entity
@Table(Name="Test_no2")
Public Class Test_no2 Extends BaseEntity Implements Serializable {


Private DateTestbri;

Private StringTestadr;

Public DateGettestbri() {
ReturnTestbri;
}
Public voidSettestbri(DateTestbri) {
This.Testbri=Testbri;
}
Public string Gettestadr () Span class= "pun" >{
  return Testadr &NBSP;}
 publicvoid Settestadr (string Testadr) {
   this. Testadr = Testadr &NBSP;}
&NBSP;
&NBSP;

}

This results in the generation of tables only: Test_no1, Test_no2 two tables, and both tables contain ID, CreationTime, modificationtime three properties

But if you change the @mappedsuperclass to @entity, you're going to create a baseentity table.

The use of @MappedSuperclass