Multiple inheritance java, what am I doing wrong?

Question

Java

First of all, I create a "top class".

public class TOP {
  public TOP() {
    System.out.println ("TOP");
  }
}

It has two branches, left and right.

public class LEFT {
  public LEFT (){
    super ();
    System.out.println("LEFT");
  }
}

and

public class RIGHT {
  public RIGHT (){
    super ();
    System.out.println("RIGHT");
  }
}

Next, it looks for a common class that inherits the elements of the left and right classes.

public class CommonClass extends RIGHT, LEFT {
  
  public static void main (String [] ags){
    new RIGHT ();
    new LEFT ();
  }
}

Gives the following error:

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
Syntax error on token "]", :: expected after this token
Syntax error, insert "SimpleName" to complete Type
at CommonClass.main(CommonClass.java:4 )

What am I doing wrong?

Answer 1

Multiple inheritance java, what am I doing wrong?

What's wrong?
You can only inherit 1 class.
But you can implement up to a bunch of interfaces

//A-Z  - интерфейсы
public class CommonClass extends Direction implements A, B, C, D, Z

Answer 2

It is possible to inherit only 1 class.