Using CompareToBuilder to implement Comparable interface
Apache’s Commons Lang offers CompareToBuilder for streamlined Comparable implementation.
Java
Using ToStringBuilder to easily write toString() method
Apache’s Commons Lang’s ToStringBuilder facilitates easy toString() method creation.
Using HashCodeBuilder to implement hashCode()
Apache’s Commons Lang offers HashCodeBuilder for streamlined and efficient hashCode() method implementation.
Using EqualsBuilder to create equals() method
Apache’s Commons Lang’s EqualsBuilder simplifies proper equals() method implementation.