public class Test extends A
{
  public void bar() {
    System.out.println("child bar");
  }
  public static void foo() {
    System.out.println("child static foo");
  }
}

class A {
  public static void foo() {
    System.out.println("parent static foo");
  }

  public void bar() {
    System.out.println("parent bar");
  }
  public static void main(String[] args) {
    A parent = new A();
    A child = new Test();
    parent.bar();
    child.bar();
    parent.foo();
    child.foo();
  }

}