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现有： class TestA { public void start（） { System.out.println（"TestA"）； } } public class TestB extends TestA { public void start（） { System.out.println（"TestB"）； } public static void main （string[] args） （ （（TestA）new TestB（））.start（）； ) } 运行结果是哪项？（）
- A、 TeStA
- B、 TeStB
- C、编译失败
- D、运行时抛出异常
参考答案
更多 “ 现有： class TestA { public void start（） { System.out.println（"TestA"）； } } public class TestB extends TestA { public void start（） { System.out.println（"TestB"）； } public static void main （string[] args） （ （（TestA）new TestB（））.start（）； ) } 运行结果是哪项？（） A、 TeStAB、 TeStBC、编译失败D、运行时抛出异常” 相关考题
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