There is a great difference between joy and happiness and to a great extent it has a lot of difference, it is a feeling of gladness to experience this things and they both have the power to produce a sense of gladness.
Personally, I think happiness describes an emotional feeling it is something we derive when ever we are in a joyful situation.
Happiness is a feeling of gladness we get when our goals are achieved.
Happiness is achieved when a person escapes from suffering.
Happiness comes when a man is settled and everything is going on well and fine.
Joy is however established in a man's heart either things are going on well or not.
Joy is a permanent feeling of a disciplined man because he believes that someday, somehow things will go well very soon.
The feeling of joy is your ability to stay strong even when everything doesn't seem right or okay.
In the presence of happiness there might be mood swing which means that an happy person can be all over the place this minute and the next minute he is feeling really sad.
The feeling of joy is however for individuals who believe in greatness and possibilities, those who believe that there will be peace after the storm.
Joyful people are those wee see that are usually strong no matter what they have to go through.
Happiness is temporal, it comes when all is perfect with a man but joy is a feeling of everlasting gladness, either all is going on well or not.