If you are confident about something, you are certain that it will happen in the way you want it to.
I am confident that everything will come out right in time.
我相信最终一切都会好起来的。
Mr Ryan is confident of success.
瑞安先生对成功有信心。
If a person or their manner is confident, they feel sure about their own abilities, qualities, or ideas.
In time he became more confident and relaxed.
最终他变得更加自信而从容了。
If you are confident that something is true, you are sure that it is true. A confident statement is one that the speaker is sure is true.
She is confident that everybody is on her side.
她确信每个人都在她那一边。