单项选择题

A.Tight couplingB.Low cohesionC.High cohesionD.Loose co……

A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion， they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself.
What design issue has the team discovered？（）

A.Tight coupling
B.Low cohesion
C.High cohesion
D.Loose coupling
E.Weak encapsulation

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单项选择题Given： 11.double input = 314159.26； 12.NumberFormat nf = NumberFormat.getInstance（Locale.ITALIAN）； 13.String b； 14. insert code here Which code， inserted at line 14， sets the value of b to 314.159，26？（）

A.b = nf.parse（ input ）；
B.b = nf.format（ input ）；
C.b = nf.equals（ input ）；
D.b = nf.parseObject（ input ）；

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A.ad
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D.adad

单项选择题Given： 11.String test = This is a test ； 12.String[] tokens = test.split（ s ）； 13.System.out.println（tokens.length）； What is the result？（）

A.0
B.1
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单项选择题Given that c is a reference to a valid java.io.Console object， and： 11.String pw = c.readPassword（ %s ， pw：）； 12.System.out.println（ got + pw）； 13.String name = c.readLine（ %s ， name：）； 14.System.out.println（ got ， name）； If the user types fido when prompted for a password， and then responds bob when prompted for a name，what is the result？（）

A.An exception is thrown at runtime
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D.Compilation fails.

多项选择题WhichtwoscenariosareNOTsafetoreplaceaStringBufferobjectwithaStringBuilderobject？（）

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.