Need help with Interface

[karanhs6]

interface FictionChars
{
protected String name;
protected String Realname;
protected String power;

public FictionChars (String eName, String ername, String ePower)
{
name = eName;
Realname = ername;
power = ePower;
}

public String toString()
{
String result = "Name: " + name + "\n";
result += "Realname: " + Realname + "\n";
result += "Power: " + power;
return result;
}

public interface String extraAb();
}
_________________________________
public class Bionicwoman implements FictionChars
{
public Bionicwoman (String eName, String ername, String ePower)
{
super (eName, ername, ePower);
}
public String extraAb()
{
return "Amplified hearing in her right ear";
}
}
____________________________

I really dont like interface but knowing that my exams soon i need to do my past hws for practice. i got the abstract example which is really similar to this infact i just added interface. so please direct me how to do this one.

[Eranga]

Do what? I can't see any.

[karanhs6]

public class heroes
{
private FictionChars[] heroList;

public heroes()
{
heroList = new FictionChars[7];
heroList[0] = new Spiderman ("SpiderMan", "Peter Parker",
"Able to shoot extremely strong and durable spider-web strings from wrists");
heroList[1] = new Bionicwoman ("BionicWoman", "Jaime Sommers",
"A greatly strengthened right arm and enhanced legs");
heroList[2] = new Batman ("Batman", "Bruce Wayne",
"High human strength, agility, athleticism and peak conditions");
heroList[3] = new SuperMan ("SuperMan", "Clark Kent",
"Superhuman strength, speed, stamina, invulnerability, senses");
heroList[4] = new WonderWoman ("WonderWoman", "Princess Diana",
"Superhuman strength, speed, reflexes, stamina, and durability");
heroList[5] = new SixMilDollarMan ("Six Million Dollar Man", "Steve Austin",
"His right arm, both legs and the left eye are replaced by bionic implants");
heroList[6] = new Wolverine ("Wolverine", "Logan",
"Regenerative healing factor,Retractable adamantium-laced bone claws");
}
public void Extra()
{
String abilities;
for (int i=0; i < heroList.length; i++)
{
System.out.println (heroList[i]);
abilities = heroList[i].extraAb();
System.out.println ("Extra Abilities: " + abilities);
System.out.println ("-----------------------------------");
}
}
}

Oh sorry here it is. i need to print the Extra()
like the name, the real name and power and extra ability.
in abstract here is the output.

Name: SpiderMan
Realname: Peter Parker
Power: Able to shoot extremely strong and durable spider-web strings from wrists
Extra Abilities: Ability to cling to most surfaces,Superhuman strength, speed, stamina, agility, reflexes, and durability.
-----------------------------------
Name: BionicWoman
Realname: Jaime Sommers
Power: A greatly strengthened right arm and enhanced legs
Extra Abilities: Amplified hearing in her right ear
-----------------------------------

[Eranga]

In heroes class I can see that you've refereed many classes to add into arrays. Did you define them all?

[karanhs6]

Yes i did and Bionic woman was one of them. they all go the same way.

[Eranga]

Then where you stuck with?

If you want to add additional details to the print statements you can have multiples.

[karanhs6]

the thing is i literally copied the whole thing from abstract method i did then i just put in implements instead of extend lik this one doesnt even work :(

[Eranga]

If this is the main class, to work on you've to define the execution point, that is the main method.

[karanhs6]

public class TheGroup{
    public static void main (String[] args)   {
      heroes G = new heroes();
      G.Extra();
   }
}

i think i should re write the Fiction chars but keep it completely empty.

[Eranga]

Means that in constructor the list is not manipulated properly.

[karanhs6]

FictionChars.java:7: <identifier> expected
public FictionChars (String eName, String ername, String ePower)
                   ^

this are the errors i got.. Help plz

[Eranga]

Could you post the complete constructor implementation.

[karanhs6]

I did that FictionChars is my constructor

[Eranga]

Yeah, somewhere you've done a mistake, seem that defining an identifier in a wrong way, or invalid reference.

[karanhs6]

yea i figured but i dont know whats wrong though. honestly i hate interface, i understand the basic but when i have to convert from abstract to interface everything goes blank. i tried everything i cant change the constructor cuz well its the constructor and if i change other classes than it will become a interface by itself i think. well i give up i have exam in like 4 hours and i will just go and give it i guess.

[Eranga]

How I miss that. :(

Seems to me you don't have any idea about the interfaces lol. How long you deals with these? You have to learn a lot, take a start, I'll help you.

[Eranga]

yea i figured but i dont know whats wrong though. honestly i hate interface, i understand the basic but when i have to convert from abstract to interface everything goes blank. i tried everything i cant change the constructor cuz well its the constructor and if i change other classes than it will become a interface by itself i think. well i give up i have exam in like 4 hours and i will just go and give it i guess.

First of all properly define the interface. In an interface you must define the return type and no implementations at all.

[karanhs6]

so should i just put it as :

interface FictionChars
{
public FictionChars (String eName, String ername, String ePower)
{
}

public interface String extraAb();
}

[Eranga]

No, it's something like this.

interface FictionChars {

    public void FictionChars (String eName, String ername, String ePower);

}

You haven't define the return type. You misses the return type and that's why it's complain.