Java-继承，带有方法的类

Question

I have my subclass:

 public class Actions extends Main{ public void getFireTarget() { GameObject target = getGameObjects().closest("Target"); do{ log("Shooting at the target"); getMouse().click(target); } while(target != null && !getDialogues().inDialogue() && getLocalPlayer().getTile().equals(rangeTile)); } } 

I want to write similar methods, so I can call them in my Main class, so I don't have to write over and over.

My main class looks like this (won't fully paste it as it's long):

 public class Main extends AbstractScript{ ...code here Actions actions = new Actions(); } 

So I am trying to implement the methods in Actions by doing actions.getFireTarget(), which seems to work. But when I compile, I am getting two compile errors: 1) In the Main class, in the line: Actions actions = new Actions(); 2) In the Actions class, in the line where I am extending the superclass.

Am I missing something in the sub class in order to store methods and then call them in the main method? Please advise! Thanks

Answer 1

The syntax is wrong. () are not allowed here: public class SomeName() . Remove the brackets.

Answer 2

I am having trouble understanding your details. Here is a short info about inheritance:

public class A{
  protected int t;
  public void methodA(){}
}

public class B extends A{
  @Override
  public void methodA(){}
  public void methodB(){}
}

If you override the methodA in class B, any call from a instance of class B to the method will use the method defined in class B. (If you dont write the method in class B, it will use the method from class A)

Objects of class A cannot use methodB() defined in class B. Also you can access the field t in class B, because of the protected modified.

Answer 3

I think its better for you your problem to instantiate other class to your main class if you have same function name or same variable name. try to compile and run this code

public class First{
    Second sec = new Second();
    String s = "This is first";
    public First(){

        System.out.println(this.s);
        System.out.println(getSecondString());
        System.out.println(sec.getSecondString());
    }
    public String getSecondString(){
        return "This is first";
    }
    public static void main(String args[]){
        new First();
    }
}

public class Second {

    String s = "This is second";
    public String getSecondString(){
        return s;
    }

}