The UTF-8 character is very good，so you can name your variable using your mother tongue！

[xxhls]

Good

String 你好 = "你好";
System.out.println(你好);

Bad

String hello = "你好";
System.out.println(hello);

[flyico]

And with emoji it will be better！

NSString* 😡 = @"😀";
NSLog(😡);

[xxhls]

And with emoji it will be better！

NSString* 😡 = @"😀"; NSLog(😡);

Good!!!!

[Junzh666]

String 触斯 = "假";
System.out.println(触斯);