單項(xiàng)選擇題

Which change can you make to Target without affecting Client？（）

A.Line 4 of class Target can be changed to return i++；
B.Line 2 of class Target can be changed to private int i = 1；
C.Line 3 of class Target can be changed to private int addOne（）{}；
D.Line 2 of class Target can be changed to private Integer i = 0；

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單項(xiàng)選擇題

What is the result？（）

A.0
B.1
C.4
D.Compilation fails.
E.An exception is thrown at runtime.

多項(xiàng)選擇題

Whichtwo scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object？（）

A.When using versions of Java technology earlier than 5.0.
B.When sharing a StringBuffer among multiple threads.
C.When using the java.io class StringBufferInputStream.
D.When you plan to reuse the StringBuffer to build more than one string.
E.Enitiation of separate design processes to the separation of users

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Which change can you make to Target without affecting Client？（）

你可能感興趣的試題

What is the result？（）

Whichtwo scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object？（）

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Which change can you make to Target without affecting Client？（）

What is the result？（）

Whichtwo scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object？（）