How to compare time in java

I have the following format for time "hh:mm:ss" . Now I have two time values such as,

Date previous_time=20:50:55
Date current_time=19:50:55

And I am trying to compare it like this,

if(previous_time.after(current_date)){
  Log.i("Time Comparision","before is true");
      System.out.println("before");  
}
else if(current_time.after(previous_time)){
  Log.i("Time Comparision","afte开发者_运维技巧r is true");
  System.out.println("after");   
}
else {
  System.out.println("nothing");
  Log.i("Time Comparision not happened","");
}

But both my if conditions are not working. My question is, how to compare two times when they are in the above mentioned format?

In your first line of code you refer to current_date not current_time.

Either that's the problem or the two dates are equal, which would execute the part in else.

You can try to compare it via Date.getTime() function, which returns milliseconds after 1/1/1970.