实践中的私有成员与公共成员(封装有多重要?)[关闭]

private Foo foo;
public Foo getFoo() {}
public void setFoo(Foo foo) {}

private static class SomeSmallDataStructure {
    public int someField;
    public String someOtherField;
}

public fields

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code smell

x setX(String)

public boolean isEmployeeStatusEnabled() {
    return pinCodeValidation.equals(PinCodeValidation.VALID);
}

public EmployeeStatus getEmployeeStatus() {
    Employee employee;
    if (isEmployeeStatusEnabled()
            && (employee = getSelectedEmployee()) != null) {
        return employee.getStatus();
    }
    return null;
}

public void setEmployeeStatus(EmployeeStatus status) {
    getSelectedEmployee().changeStatusTo(status, getPinCode());
    fireComponentStateChanged();
}