What common mistakes in java have you made or see other people making?

Answer 1

String a = "123";
if (a=="123") {
...
}
..........

Answer 2

Missing ;s. Sometimes missing brackets {}. Often syntax mistakes with switches. But most generally just logic errors.

Answer 3

Programming Standards.
* Using public instead of protected/private (when necessary)
* Bad naming conventions
* Lack of error handling
* Redundancies, example:
if(x==3)
return true;
else
return false;

instead of:
return x==3;

Answer 4

missing ;

Answer 5

forget to import the class ._.

Answer 6

forget to import required package

Answer 7

Forgetting to add capital letters where necessary. 😅