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本文导语: What is the requirement of the class which implements the following Interface 1. public interface Test { 2. void someMethod(); 3. } Select all correct answers a.Should have someMethod which must be neccessarily declared as pu...
What is the requirement of the class which implements the following Interface
1. public interface Test {
2. void someMethod();
3. }
Select all correct answers
a.Should have someMethod which must be neccessarily declared as public.
b.Should have someMethod which could be 'friendly' or public
c.should have someMethod which should not throw any checked exceptions
d.Should have someMethod which cannot be sychronized as sychronized is not in the signature of the interface definition.
选什么?为什么?
1. public interface Test {
2. void someMethod();
3. }
Select all correct answers
a.Should have someMethod which must be neccessarily declared as public.
b.Should have someMethod which could be 'friendly' or public
c.should have someMethod which should not throw any checked exceptions
d.Should have someMethod which cannot be sychronized as sychronized is not in the signature of the interface definition.
选什么?为什么?
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a,c 吧。
a.接口中的函数默认为public，实现或继承不能比public更narrow.
c.被重构没有抛出异常，重构函数也不能抛出任何异常。
a.接口中的函数默认为public，实现或继承不能比public更narrow.
c.被重构没有抛出异常，重构函数也不能抛出任何异常。
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建议你去www.javaunion.com看看，你问的很多问题哪里都有答案了的……
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看看 7.5接口.
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