小编Mar*_*oui的帖子

大家好,我的JPA项目有问题.Fichier.java结束Application.java实现了一个接口"FileSystemElement.java"那些是我的类Application.java

package com.bfi.webtop.model;



import java.io.Serializable;
import java.util.*;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.IdClass;
import javax.persistence.Table;

/** @pdOid d477195f-149e-4336-8586-19d6a09ee2d4 */
@Entity
@Table(name="application_")
public abstract class Application implements FileSystemElement, Serializable {
//  public Application() {
//      super();
//  }



  public Application(int id_app, String url) {
super();
this.id_app = id_app;
this.url = url;
  }



      public Application() {
  super();
  // TODO Auto-generated constructor stub
   }



  private int id_app;

  private java.lang.String url;

  /**
  * @return the url
  */
  public java.lang.String getUrl() …