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来源: 互联网 发布时间：2015-01-15
本文导语: Which of the following statements are true? 1) If a class has any abstract methods it must be declared abstract itself. 2) All methods in an abstract class must be declared as abstract 3) When applied to a class, the final modifier means it...
Which of the following statements are true?
1) If a class has any abstract methods it must be declared abstract itself.
2) All methods in an abstract class must be declared as abstract
3) When applied to a class, the final modifier means it cannot be sub-classed
4) transient and volatile are Java modifiers
Answer ? why?
1) If a class has any abstract methods it must be declared abstract itself.
2) All methods in an abstract class must be declared as abstract
3) When applied to a class, the final modifier means it cannot be sub-classed
4) transient and volatile are Java modifiers
Answer ? why?
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我印象中 volatile 在 Java 中好象还没有，查了一下发现确实有。 :)
答案我认为确实应该是：1、3、4
答案我认为确实应该是：1、3、4
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