多项选择题
Which the two demonstrate encapsulation of data？（）
A. Member data have no access modifiers.
B. Member data can be modified directly.
C. The access modifier for methods is protected.
D. The access modifier to member data is private.
E. Methods provide for access and modification of data.
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单项选择题
After execution. What are the values for i and j （）
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Which statement at Point X on line 1 allows this code to compile and run？（）
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E. No statement in needed.
