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

public class ChildClass extends FatherClass {
  public ChildClass() {
    System.out.println("ChildClass Create");
  }

  public static void main(String[] args) {
    FatherClass fc = new FatherClass();
    ChildClass cc = new ChildClass();
  }
}
父类优先
输出结果
FatherClass Create
FatherClass Create
ChildClass Create
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