java - I have to write a fighter class to be used with my assignment program and it is returning errors that I cannot figure out -

import java.util.scanner;  public class assignment5  {  public static void main(string[] arg) {           fighter myfighter, enemyfighter;          scanner console = new scanner(system.in);          int num1, num2, num3;          string str, another;          system.out.println ("***  fighter game ***");           {                  system.out.println("create fighter (type 3 integers + name): ");                  num1 = console.nextint();   num2 = console.nextint();   num3 = console.nextint();                  str = console.next();                  if (num1 + num2 + num3 == 10) {                         myfighter = new fighter (num1, num2, num3, str);                        enemyfighter = new fighter( );                        enemyfighter.setname ("enemy");                        system.out.print( myfighter.getname()+"    ["+myfighter.getpower()+","+myfighter.getspeed()+","+myfighter.getheal()+"] ");                        system.out.print( enemyfighter.getname()+"    ["+enemyfighter.getpower()+","+enemyfighter.getspeed()+","+enemyfighter.getheal()+"] ");                        system.out.println();                       int fights = 0;                      boolean gameover= false;                      while (fights < 10  &&  !gameover){                          system.out.print("fight[" + fights + "]: ");                          myfighter.attack (enemyfighter);                          myfighter.heal ();                          enemyfighter.attack(myfighter);                          enemyfighter.heal();                          myfighter.printinfo();                          enemyfighter.printinfo();                          if (enemyfighter.isdead() ||     myfighter.isdead()) gameover = true;                          fights ++;                          system.out.println();                      }                      if(myfighter.gethealth() > enemyfighter.gethealth())     system.out.println(" win");                      else system.out.println("you lost");                     system.out.println();                     system.out.print("play fight (y/n)? ");                     = console.next();                 }                 else {                     system.out.println("invalid inputs. total of 3     numbers should 10.");                     = console.next();                 }             } while (another.equalsignorecase("y"));     }     } 

fighter.java class

    public class fighter     {     private int power;     private int speed;     private int heal;     private int health;     private string name;      public fighter (int num1, int num2, int num3, string str)     {      }      public string getname()     {         return name;     }      public int getpower()     {         return power;     }      public int getspeed()     {         return speed;     }      public int getheal()     {         return heal;     }      public int gethealth()     {         return health;     }      public void setname(string newname)     {      }      public void setpower(int newpower)     {      }      public void setspeed(int newspeed)     {      }     public void setheal(int newheal)     {      }      public void sethealth(int newhealth)     {      }      public boolean isdead()     {         if(health <= 0)         {             return true;         }         else         {             return false;         }     }      public void heal()     {      }      public void printinfo()     {      }      public void attack()     {      }     } 

the assignment program followed fighter class , post error code assignment below

exception in thread "main" java.lang.error: unresolved compilation problems:  constructor fighter() undefined method attack() in type fighter not applicable arguments (fighter) method attack() in type fighter not applicable arguments (fighter)  @ assignment5.main(assignment5.java:27) 

this error message displayed , have tried fix , i'm not sure else try, not allowed change assignment program, fighter class allow program run way should

you getting issues because fighter doesn't have proper methods. example: fighter has constructor defined public fighter (int num1, int num2, int num3, string str), trying instantiate new 1 enemyfighter = new fighter( );. need create constructor (overload existing one) takes no parameters.

the same thing happens attack method, it's signature public void attack() calling parameters: myfighter.attack (enemyfighter);. means you'll need overloaded attack method receives 1 parameter of type fighter: public void attack(fighter fighter)