Usage of accessor methods

This is my class containing setters and getters

package Pack;

public class Details {

String FirstName,LastName,City,Country;

    public Details(String firstName, String lastName, String city,
            String country) {
        super();
        FirstName = firstName;
        LastName = lastName;
        City = city;
        Country = country;
    }

    public String getFirstName() {
        return FirstName;
    }

    public void setFirstName(String firstName) {
        FirstName = firstName;
    }

    public String getLastName() {
        return LastName;
    }

    public void setLastName(String lastName) {
 开发者_运维知识库       LastName = lastName;
    }

    public String getCity() {
        return City;
    }

    public void setCity(String city) {
        City = city;
    }

    public String getCountry() {
        return Country;
    }

    public void setCountry(String country) {
        Country = country;
    }
}

===========================================================================

This is my main()

package Pack;

public class MainClass {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Details d = new Details("Hari","L","Bangalore","India");

    }

}

==========================================================================

I know my main() is incomplete. What should i write to display the contents of "d"?

---

There are two ways.

One, just print each property of your details object :

System.out.println("FirstName :"+d.getFirstName()); etc..

Or, a better option would be to override toString() method in your class

public void toString() {
        return this.getFirstName()+ " " + this.getLastName()+" "+.... ;
}

and then just print your class System.out.println(d);

---

you need a toString() method in Details class:

public String toString(){
   return this.firstName + " " + this.lastName + ", " + this.city + " " + this.country;
}

and

System.out.println(d.toString());

in main

---

Override toString() method in Details as follow and then just call to print what you want:

public String toString(){
   return this.firstName+" "+this.lastName+" "+this.city+" "+this.country;
}

in main just call it as System.out.println(d);

---

Something like this?

System.out.printf("%s %s (%s, %s)\n", d.getFirstName(), d.getLastName(), d.getCity(), d.getCountry());

I would make your fields (FirstName, LastName, City, and Country) private, otherwise there's not much point in using getters and setters.

---

Try to add methods (or something similar with more properties):

public String asFirstnameLastname()
{
    return firstName + " " + lastName;
}

public String asLastNameFirstname()
{
   return lastName + " " + firstName;
}

toString() is also a good choice.