Пожалуйста, предоставьте свое предложение

lang="java">package Pack1;

abstract class A
{
  int i;
  public A(int i)
  {
    this.i=i;
    System.out.println(this.i);
  }
}

class B extends A() //Syntax error on token "extends",@ expected after this token
{ //Syntax error on token "{", delete this token

  public B(int a) //syntax error on token "public" delete this token. And Syntax error 
                  on token "int", delete this token
  {
    super(a);
  }
} //Syntax error on token "}", delete this token

public class Test3 
{
  public static void main(String[] args) 
  {
    B b1=new B(7);
  }
}