Java抽象类及子类实例化顺序和方法调用顺序测试

package com.secbro.test.abstractInit;

/**
 * @author zhuzhisheng
 * @Description
 * @date on 2016/5/28.
 */
public abstract class Fruit {

    protected Fruit(){
        System.out.println("实例化父类");
        toPlant();
        toEat();
    }

    protected abstract void toEat();

    protected abstract void toPlant();

}

package com.secbro.test.abstractInit;

/**
 * @author zhuzhisheng
 * @Description
 * @date on 2016/5/28.
 */
public class Banana extends Fruit{

    protected Banana(){
        System.out.println("实例化子类 Banana");

    }

    @Override
    protected void toEat() {
        System.out.println("Eat a Banana");
    }

    @Override
    protected void toPlant() {
        System.out.println("Plant a Banana");
    }

}

package com.secbro.test.abstractInit;

/**
 * @author zhuzhisheng
 * @Description
 * @date on 2016/5/28.
 */
public class Orange  extends Fruit{

    public Orange() {
        System.out.println("实例化子类 Orange");
    }

    @Override
    protected void toEat() {
        System.out.println("Eat a Orange");
    }

    @Override
    protected void toPlant() {
        System.out.println("Plant a Orange");
    }

}

package com.secbro.test.abstractInit;

/**
 * @author zhuzhisheng
 * @Description
 * @date on 2016/5/28.
 */
public class TestFruit {
    public static void main(String[] args) {
        new Banana();
        new Orange();
    }
}

实例化父类
Plant a Banana
Eat a Banana
实例化子类 Banana
实例化父类
Plant a Orange
Eat a Orange
实例化子类 Orange