java coding standards for interfaces

1) Method names should start with small letters.
2) Method names are usually verbs
3) If method contains multiple words, every inner word should start with 
uppercase letter.
Ex : toString()
4) Method name must be combination of verb and noun
Ex : getCarName(),getCarNumber()

1) Interface should start with uppercase letters
2) Interfaces names should be adjectives
Example : Runnable, Serializable, Marker, Cloneable

It is recommended highly to follow java coding standards.
Classnames should start with uppercase letter. Classnames names should be nouns.
If Class name is of multiple words then the first letter of inner word must be 
capital letter.
Ex : Employee, EmployeeDetails, ArrayList, TreeSet, HashSet