JarCastingPojomatic
Pojomatic provides configurable implementations of the equals(Object), hashCode() and toString() methods inherited from java.lang.Object.
For example, the following bean has been "pojomated":
import org.pojomatic.Pojomatic;
import org.pojomatic.annotations.AutoProperty;
@AutoProperty
public class Person {
private final String firstName;
private final String lastName;
private final int age;
public Person(String firstName, String lastName, int age) {
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
}
public String getFirstName() { return this.firstName; }
public String getLastName() { return this.lastName; }
public int getAge() { return this.age; }
@Override public boolean equals(Object o) {
return Pojomatic.equals(this, o);
}
@Override public int hashCode() {
return Pojomatic.hashCode(this);
}
@Override public String toString() {
return Pojomatic.toString(this);
}
}
The above class implements equals and hashCode methods following the best practices outlined in Josh Bloch's Efective Java. Moreover, running
System.out.println(new Person("John", "Doe", 32).toString());
will result in the following output:
Person{firstName: {John}, lastName: {Doe}, age: {32}}
For more information and examples, see the Pojomatic site