package test;
 public abstract class Parent {
     public int testvar=1;
     public void showTestVar()
     {
         System.out.print("testvar: " + this.testvar);
     }
 public  class Child extends Parent {
     public  int testvar =  51;
 }
 class Run {
     public static void main(String[] args) {
         Child ik = new Child();
         ik.showTestVar();
     }
 }

rezultāts ir "testvar: 1"