could not execute statement; sql [n/a]; constraint [null]; nested exception is org.hibernate.exception.constraintviolationexception: could not execute statement code example
Example: could not execute statement; sql [n/a]; constraint [null]; nested exception is org.hibernate.exception.constraintviolationexception: could not execute statement
@Entity
@Table(name = "bankuser")
public class User implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 6447416794596398975L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id", unique = true, nullable = false)
private Long id;
@Column(name = "firstname", length = 50)
private String firstname;
@Column(name = "lastname", length = 50)
private String lastname;
public User() {
}
public User(Long id) {
this.id = id;
}
public User(Long id, String firstname, String lastname, String designation, Integer salary) {
this.id = id;
this.firstname = firstname;
this.lastname = lastname;
}
public User(String firstname, String lastname, String designation, Integer salary) {
this.firstname = firstname;
this.lastname = lastname;
}
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
public String getFirstname() {
return this.firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getLastname() {
return this.lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("Id: ").append(this.id).append(", firstName: ").append(this.firstname).append(", lastName: ")
.append(this.lastname);
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (id == null || obj == null || getClass() != obj.getClass())
return false;
User toCompare = (User) obj;
return id.equals(toCompare.id);
}
@Override
public int hashCode() {
return id == null ? 0 : id.hashCode();
}
}