Checkstyle coding practices - Basic Java

Basic Java practices - provided by CheckStyle

AvoidStarImport

Check that finds import statements that use the * notation.

AvoidStaticImport

Check that finds static imports.

EqualsHashCode

Checks that classes that override equals() also override hashCode().

DefaultComesLast

Check that the default is after all the cases in a switch statement.

EqualsAvoidNull

Checks that any combination of String literals with optional assignment is on the left side of an equals() comparison.

UnusedImports

Checks for unused import statements.

FinalClass

Checks that class which has only private ctors is declared as final.

FinalLocalVariable

Ensures that local variables that never get their values changed, must be declared final.

AvoidNestedBlocks

Finds nested blocks.

MultipleVariableDeclarations

Checks that each variable declaration is in its own statement and on its own line.

ImportControl

Check that controls what packages can be imported in each package.

ImportOrder

Ensures that groups of imports come in a specific order.

ModifierOrder

Checks that the order of modifiers conforms to the suggestions in the Java Language specification

MissingSwitchDefault

Checks that switch statement has "default" clause.

DesignForExtension

Checks that classes are designed for inheritance.

VisibilityModifier

Checks visibility of class members.

PackageDeclaration

Ensures there is a package declaration and (optionally) in the correct directory.

RedundantImport

Checks for imports that are redundant.

StringLiteralEquality

Checks that string literals are not used with == or !=.

CovariantEquals

Checks that classes that define a covariant equals() method also override method equals(java.lang.Object)

ExplicitInitialization

Checks if any class or object member explicitly initialized to default for its type value (null for object references, zero for numeric types and char

and false for boolean.

FallThrough

Checks for fall through in switch statements Finds locations where a case contains Java code - but lacks a break, return, throw or continue statement.

HiddenField

Checks that a local variable or a parameter does not shadow a field that is defined in the same class.

MissingCtor

Checks that classes (except abstract one) define a constructor and don't rely on the default one.