Hello friends and fellow students in Japanese?

There are several ways to say "Hello friends and fellow students" in Japanese, depending on the level of formality and the nuance you want to convey. Here are a few options:

* 皆さん、こんにちは！(Minasan, konnichiwa!) This is the most straightforward and common way. "Minasan" means "everyone," and "konnichiwa" means "hello" (used during the day). This is polite and suitable for most situations.

* 友達とクラスメイトの皆さん、こんにちは！(Tomodachi to kurasumeito no minasan, konnichiwa!) This is a more literal translation, explicitly mentioning "friends" (tomodachi) and "classmates" (kurasumeito). It's a bit more formal than the first option.

* みんな、こんにちは！(Minna, konnichiwa!) This is a more casual and friendly way to say hello. "Minna" means "everyone" but is more informal than "minasan." Use this only with close friends or in informal settings.

* クラスのみんな、こんにちは！(Kurasu no minna, konnichiwa!) This translates to "Everyone in the class, hello!" This is a good option if you're addressing only your classmates.

The best option depends on your context. For most situations, 皆さん、こんにちは！(Minasan, konnichiwa!) is a safe and appropriate choice.