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摘要：中的繼承初始化順序父類和子類年齡動(dòng)物可以吃東西類執(zhí)行了年齡狗可以吃東西類執(zhí)行了對(duì)象的屬性和構(gòu)造方法年齡動(dòng)物可以吃東西類執(zhí)行了的
java中的繼承初始化順序 父類和子類
/javaDemo3/src/com/imooc/Animal.java
package com.imooc;
public class Animal {
public int age;
public String name;
public void eat() {
System.out.println("年齡:"+age+ "動(dòng)物可以吃東西" );
}
public Animal() {
System.out.println("Animal類執(zhí)行了" );
}
}
/javaDemo3/src/com/imooc/Dog.java
package com.imooc;
public class Dog extends Animal {
public void eat() {
System.out.println("年齡:"+age+ "狗可以吃東西" );
}
public Dog() {
System.out.println("Dog類執(zhí)行了" );
}
}
/javaDemo3/src/com/imooc/Initail.java
package com.imooc;
public class Initail {
public static void main(String[] args) {
// TODO Auto-generated method stub
Dog dog = new Dog();
dog.age = 10;
dog.name = "aa";
dog.eat();
}
}
對(duì)象的屬性和構(gòu)造方法
/javaDemo3/src/com/imooc/Animal.java
package com.imooc;
public class Animal {
public int age = 10;
public String name;
public void eat() {
System.out.println("年齡:"+age+ "動(dòng)物可以吃東西" );
}
public Animal() {
age = 20;
System.out.println("Animal類執(zhí)行了" );
}
}
/javaDemo3/src/com/imooc/Initail.java
package com.imooc;
public class Initail {
public static void main(String[] args) {
// TODO Auto-generated method stub
Animal animal = new Animal();
System.out.println("animal的age:" + animal.age );
Dog dog = new Dog();
dog.age = 10;
dog.name = "aa";
dog.eat();
}
}
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