Why i have a NullPointerException when i set Calendar.getInstance() in a attribute of model?

Question

In my model i have this:

@Entity
public class Plan {
  ...
  @Temporal(TemporalType.TIMESTAMP)
  @Column(nullable = false)
  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
  private Calendar creationDate;
  ...

In eclipse debugger, i have a NullPointerException in this line:

plan.setCreationDate(instance);

Answer 1

Probably your plan object isn't instantiated...

This will prevent the exception:

if (plan != null){
    plan.setCreationDate(instance);
}