写出下列程序的输出结果 public class Test { public static void main(String[] args) { Shape shape = new Circle(); System.out.println(shape.name); shape.printType(); shape.printName(); } } class Shape { public String name = "shape"; public Shape(){ System.out.println("shape constructor"); } public void printType() { System.out.println("this is shape"); } public static void printName() { System.out.println("shape"); } } class Circle extends Shape { public String name = "circle"; public Circle() { System.out.println("circle constructor"); } public void printType() { System.out.println("this is circle"); } public static void printName() { System.out.println("circle"); } }