构造器顺序:

1、基类构造；

2、申明顺序成员化思路方法；

3、导出类构造器

Bread
{
Bread
{
.out.prln("Bead");
}
}
Sandwich
{
Sandwich
{
.out.prln("Sandwich");
}
}
Cheese
{
Cheese
{
.out.prln("Cheese");
}
}
SuperMeal extends Bread
{
SuperMeal
{
.out.prln("SuperMeal");
}
}
Meal extends SuperMeal
{
Sandwich sandwich= Sandwich;
Cheese cheese= Cheese;
Meal
{
.out.prln("Meal");
}
public void (String args) {
Meal meal= Meal;
}
}

输出:

--------------------Configuration: <Default>--------------------
Bead
SuperMeal
Sandwich
Cheese
Meal

Process completed.