Access modifiers

public: access to the member (variable, method) or class is access from any other class.
protected: access to the member is restricted to classes in the same package or subclasses derived from this class but contained in other packages.
package: access to the member is restricted to classes in the same package. (the default, denoted by the absence of an access keyword)
private: access to the member is restricted to the class where it is defined.