public static void main(String[] args) {
Father f = new Father();
f.fathMathod();
Father fs = new Son();
fs.fathMathod();
Son son = new Son();
son.fathMathod();
son.sonMathod();
System.out.println(son.father);
/** 子类的对象不具有父类的私有的属性或方法 */
// System.out.println(son.prifat);
/** 子类的对象不可以由父类产生 */
// Son sf = (Son) new Father();
// sf.fathMathod();
// sf.sonMathod();
double d = 8.0934d;
int i = (int) d;
int ii = 4;
double dd = ii;
Integer integer = new Integer(5);
Double double1 = new Double(integer);
System.out.println(d);
System.out.println(i);
System.out.println(dd);
System.out.println(double1);
}
