强制类型转化 判断能不能转
Car car1 = new Car();
TheTrafficTool tool = car1;
if(tool instanceof Boat)
{
Boat boat1 = (Boat)tool;
}
else {
System.out.println("不能强制类型转换");
}
强制类型转化 判断能不能转
Car car1 = new Car();
TheTrafficTool tool = car1;
if(tool instanceof Boat)
{
Boat boat1 = (Boat)tool;
}
else {
System.out.println("不能强制类型转换");
}