java cannot find symbol variable super

Question

hello i'm super stuck and cannot work out why this is not working. i'm trying to use inheritance and override but i keep getting this error. Been trying to figure this out for the past hour but have had no clue. i'm probably missing something silly, any help would be hugely grateful.

public class FlyingDragon extends Entity {
private int Hp;
public FlyingDragon(int x, int y, int Hp){
    super (x, y);
    this.Hp = Hp;
}
public void setHp(int Hp){
    this.Hp = 100;
}

public int getHp(){
   return Hp;}

public void setType(String type) { ###error is here
 super.setType("Flying Dragon");}
}

    public abstract class Entity { 
private char symbol; // symbol that represents the entity
private String type; // every entity is of a type
private int x; // x coordinate in the room
private int y; // y coordinate in the room


 public Entity (int x, int y) {
 type = "entity";
 this.x=x;
 this.y =y;
}



 public char getSymbol() {
   return symbol;
  }

 public void setSymbol(char c) {
     symbol = c;
  }

 public int getX() {
   return x;
  }

  public int getY() {
   return y;
  }
  public void setX (int newx) {
     this.x=newx;

   }

   public void setY (int newy) {
     this.y=newy;

   }
    public String getType() {
      return type;
     }

  public void setType(String type) {
     this.type = type;
     }
  }

suppose `public abstract class Entity { }` is missing a } at the end. — Rajith Pemabandu, Apr 05 '17 at 04:32
yeah sorry its not in my program, again thankyou for the input — Patrick Scott Jackson, Apr 05 '17 at 04:35
Are both your classes in the same file? Java does not like multiple public classes in the same file. — Michael Sharp, Apr 05 '17 at 04:39
Cannot find symbol variable super. Seems as though the syntax is not reading in the entity properly — Patrick Scott Jackson, Apr 05 '17 at 04:40
Unable to reproduce (using version #3 of question). To prove that, I removed `public` from both classes, so I could put them both in same .java file, and it compiles fine on [IDEONE](https://ideone.com/x9VI9V). See output: **`Compiles and runs ok`** — Andreas, Apr 05 '17 at 04:46
i'm using net beans and also been told to keep them in seperate .java files — Patrick Scott Jackson, Apr 05 '17 at 04:50

score 0 · Answer 1 · answered Apr 05 '17 at 04:31

0

Change method setType of FlyingDragon to :

public void setType(String type) {
        super.setType("Flying Dragon");
    }

answered Apr 05 '17 at 04:31

Jay Smith

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tried that but still hasn't worked, thankyou for your input though ! – Patrick Scott Jackson Apr 05 '17 at 04:33
What else problems do you have? – Jay Smith Apr 05 '17 at 04:34
exactly the same error, Cannot find symbol variable super – Patrick Scott Jackson Apr 05 '17 at 04:36
Try to put these two classes in separate .java files – Jay Smith Apr 05 '17 at 04:40

Omore · Answer 2 · 2017-04-05T04:52:11.260

Try this:

Make separate file for Entity class put all Entity code into this class.

Entity Class:

public abstract class Entity { 
private char symbol; // symbol that represents the entity
private String type; // every entity is of a type
private int x; // x coordinate in the room
private int y; // y coordinate in the room


 public Entity (int x, int y) {
 type = "entity";
 this.x=x;
 this.y =y;
}



 public char getSymbol() {
   return symbol;
  }

 public void setSymbol(char c) {
     symbol = c;
  }

 public int getX() {
   return x;
  }

  public int getY() {
   return y;
  }
  public void setX (int newx) {
     this.x=newx;

   }

   public void setY (int newy) {
     this.y=newy;

   }
    public String getType() {
      return type;
     }

  public void setType(String type) {
     this.type = type;
     }
    }

Now create separate class for FlyingDragon.

FlyingDragon Class

public class FlyingDragon extends Entity {
private int Hp;
public FlyingDragon(int x, int y, int Hp){
    super(x, y);
    this.Hp = Hp;
}
public void setHp(int Hp){
    this.Hp = 100;
}

public int getHp(){
   return Hp;}

public void setType(String type) { //###error is here
 super.setType("Flying Dragon");}
}

Test Class:

  public class Test {

    public static void main(String[] args)  {

        FlyingDragon d = new FlyingDragon(1,2,3);

        //whatever you want to do here
    }
}

Uncompilable source code - Erroneous tree type, thats the error i got — Patrick Scott Jackson, Apr 05 '17 at 04:48
Make sure when you use his source code you also get the ```public class Test {``` in his Test class. Its not in the normal code section so you may have missed that. — Michael Sharp, Apr 05 '17 at 04:50

java cannot find symbol variable super

2 Answers2