以下程序是否能够运行? 如能,按顺序写出输出结果?如不能,错在哪,如何改。 interface Animal { void breathe (); void run (); void eat (); } class Dog implements Animal { public void breathe (){ System . out . println (" I ' m breathing "); } void eat (){ System . out . println (" I ' m eating "); } } class Test { public static void main ( String [] args ){ Dog dog = new Dog (); dog . breathe (); dog . eat (); } }
时间: 2024-01-15 14:02:49 浏览: 122
这段程序无法运行,因为 `Dog` 类中的 `eat()` 方法没有被正确地实现和声明。以下是修改后的程序:
```
interface Animal {
void breathe();
void run();
void eat();
}
class Dog implements Animal {
public void breathe() {
System.out.println("I'm breathing");
}
public void run() {
System.out.println("I'm running");
}
public void eat() {
System.out.println("I'm eating");
}
}
class Test {
public static void main(String[] args) {
Dog dog = new Dog();
dog.breathe();
dog.eat();
}
}
```
输出结果为:
```
I'm breathing
I'm eating
```
相关问题
以下程序是否能够运行? 如能,按顺序写出输出结果?如不能,错在哪,如何改。interface Animal { void breathe (); void run (); void eat (); class Dog implements Animal { public void breathe (){ System . out . println (" I ' m breathing "); void eat (){ System . out . println (" I ' m eating "); class Test { public static void main ( String [] args ){ Dog dog = new Dog (); dog . breathe (); dog . eat (); ~ m
这段程序无法运行,因为接口 `Animal` 中的方法没有被正确地实现和声明。以下是修改后的程序:
```
interface Animal {
void breathe();
void run();
void eat();
}
class Dog implements Animal {
public void breathe() {
System.out.println("I'm breathing");
}
public void run() {
System.out.println("I'm running");
}
public void eat() {
System.out.println("I'm eating");
}
}
class Test {
public static void main(String[] args) {
Dog dog = new Dog();
dog.breathe();
dog.run();
dog.eat();
}
}
```
输出结果为:
```
I'm breathing
I'm running
I'm eating
```
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