Last Updated: February 25, 2016

Java POJO without getter/setter equals/hashcode

Simple way to generate getter/setter, equals/hashcode and default constructor without ever having to own that code.

@RequiredArgsConstructor
@ToString
@EqualsAndHashCode
public class Animal {
 @Getter @Setter private String name;
 @Getter @Setter private String gender;
 @Getter @Setter private String species;
}

Check out (Lombok)[http://projectlombok.org/] when you have time.

Oh and heres the above code without Lombok:

public class Animal {

 private String name;
 private String gender;
 private String species;

 public Animal(String name, String gender, String species) {
 this.name = name;
 this.gender = gender;
 this.species = species;
 }

 public String getName(){
 return this.name;
 }

 public void setName(String name){
 this.name = name;
 }

 public String getGender(){
 return this.gender;
 }

 public void setGender(String gender){
 this.gender = gender;
 }

 public String getSpecies(){
 return this.species;
 }

 public void setSpecies(String species){
 this.species = species;
 }

 @Override
 public boolean equals(Object o) {
 if (this == o) return true;
 if (!(o instanceof Animal)) return false;

 Animal animal = (Animal) o;

 if (gender != null ? !gender.equals(animal.gender) : animal.gender != null) return false;
 if (name != null ? !name.equals(animal.name) : animal.name != null) return false;
 if (species != null ? !species.equals(animal.species) : animal.species != null) return false;

 return true;
 }

 @Override
 public int hashCode() {
 int result = name != null ? name.hashCode() : 0;
 result = 31 * result + (gender != null ? gender.hashCode() : 0);
 result = 31 * result + (species != null ? species.hashCode() : 0);
 return result;
 }

 @Override
 public String toString() {
 return Objects.toStringHelper(this) //Using guava library objects toString
 .add("name", name)
 .add("gender", gender)
 .add("species", species)
 .toString();
 }
}

#java

#simple