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【单选题】
在JAVA语言中,包pack1的类class1 中有成员方法:protected void method_1(){...},private void method_2(){...},public void method_3(){....}和void method_4(){...},在包pack2中的类class2 不是class1的子类,你在class2 中可以调用的方法有( )。 A. B. C. D.A.
method_1
B.
method_2
C.
method_3
D.
method_4
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A.
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