20 lines
311 B
Java
20 lines
311 B
Java
package chapter4.example10;
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abstract class Animal {
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abstract void shout();
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}
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class Dog extends Animal {
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void shout() {
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System.out.println("汪汪...");
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}
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}
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public class Example10 {
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public static void main(String[] args) {
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Animal dog = new Dog();
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dog.shout();
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}
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}
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