why
package com.javarush.task.task34.task3413;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class AnyObject {
private Long id;
private String name;
private Calendar creationTime = new GregorianCalendar();
private String additionalDescription;
public AnyObject(Long id, String name, String additionalDescription) {
this.id = id;
if (name != null) {
this.name = name;
} else {
this.name = "AnyObject#" + id;
}
if (additionalDescription != null) {
this.additionalDescription = additionalDescription;
} else {
this.additionalDescription = "This is object #" + id;
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
AnyObject that = (AnyObject) o;
if (!id.equals(that.id)) return false;
if (!name.equals(that.name)) return false;
return creationTime.equals(that.creationTime);
}
@Override
public int hashCode() {
int result = id.hashCode();
result = 31 * result + name.hashCode();
result = 31 * result + creationTime.hashCode();
return result;
}
@Override
public String toString() {
return "AnyObject{" +
"id = " + id +
", name = '" + name + '\'' +
", creationTime = " + creationTime.getTime() +
", additionalDescription = '" + additionalDescription + '\'' +
'}';
}
}