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2025-02-20 01:01:20
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InstantiationException: ÎÞ·¨Îª½Ó¿Ú´´Á¢ÊµÀý

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MyInterface obj = new MyInterface();  // Õâ»á±àÒë¹ýʧ

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MyInterface obj = MyInterface.class.newInstance();

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java.lang.InstantiationException: MyInterface cannot be instantiated

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public class MyInterfaceImpl implements MyInterface {
    // ʵÏÖ½Ó¿ÚµÄÒªÁì
}

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MyInterface obj = MyInterfaceImpl.class.newInstance();

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// ´´Á¢Ò»¸ö¾ßÌåµÄʵÏÖÀàʵÀý
MyInterface obj = (MyInterface) Class.forName("com.example.MyInterfaceImpl")
                                      .getConstructor()
                                      .newInstance();

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