Compare Date object with a TimeStamp in Java

Question

When I test this code:

java.util.Date date = new java.util.Date();
java.util.Date stamp = new java.sql.Timestamp(date.getTime());

assertTrue(date.equals(sta         


        

Answer 1

Take a look at the source code compare method for Timestamp:

public boolean equals(java.lang.Object ts) {
  if (ts instanceof Timestamp) {
    return this.equals((Timestamp)ts);
  } else {
    return false;
  }
}

http://www.docjar.com/html/api/java/sql/Timestamp.java.html

It will only ever return true if the comparing object is a timestamp. Also, here is the Date source code: http://www.docjar.com/html/api/java/util/Date.java.html , and since Timestamp inherits Date, it can compare it.