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@ -214,7 +214,7 @@ public interface Externalizable extends Serializable {
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<font size=4> **3. 比较** </font> </br>
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| | ** 抽象类** | ** 接口** |
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| | **抽象类** | **接口** |
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| --- | --- | --- |
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| 1 | An abstract class can extend only one class or one abstract class at a time | An interface can extend any number of interfaces at a time |
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| 2 | An abstract class can extend another concrete (regular) class or abstract class | An interface can only extend another interface |
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