Naming in code: variables, methods, classes, ...

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Naming in code: variables, methods, classes, ...

1)

Low Coupling (This is how much a class knows about other classes.) 
High Cohesion (This is how specific your class/method is.)

2)

DON"T public void findByIdAndName(int id, String name) {} 
DO public void findBy(int id, String name) {}

3)

Name variable in camel case 
Name constants in all caps and words separated with an underscore 
Name classes in pascal case

4)

Whenever possible, use a constant value instead of a literal number.