问题：多选题A developer is creating a class Book， that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar. Which three， taken independently， will allow the developer to use the Paper class while compiling the Bookclass？（）AThe JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.BThe JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar..CThe JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar/Paper.class.DThe JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar.EThe JAR file is located at /foo/myLib.jar and the Book class is compiled using javac - cp /foo/myLib.jar/Paper Book.java.FThe JAR file is located at /foo/myLib.jar and the Book class is compiled using javac - classpath /foo/myLib.jar Book.java
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问题：多选题Given： And MainClass exists in the /apps/com/company/application directory. Assume the CLASSPATH environment variable is set to "." （current directory）. Which two java commands entered at the commandline will run MainClass？（）Ajava MainClass if run from the /apps directoryBjava com.company.application.MainClass if run from the /apps directoryCjava -classpath /apps com.company.application.MainClass if run from any directoryDjava -classpath . MainClass if run from the /apps/com/company/application directoryEjava -classpath /apps/com/company/application：. MainClass if run from the /apps directory
问题：多选题Given that c is a reference to a valid java.io.Console object，which two code fragments read a line of textfrom the console？（）AString s = c.readLine（）；Bchar[] c = c.readLine（）；CString s = c.readConsole（）；Dchar[] c = c.readConsole（）；EString s = c.readLine（%s， name ）；
问题：单选题Which can appropriately be thrown by a programmer using Java SE technology to create a desktop application？（）A ClassCastExceptionB NullPointerExceptionC NoClassDefFoundErrorD NumberFormatExceptionE ArrayIndexOutOfBoundsException
问题：单选题Given： 12.Date date = new Date（）； 13.df.setLocale（Locale.ITALY）； 14.String s = df.format（date）； The variable df is an object of type DateFormat that has been initialized in line 11. What is the result if this code is run on December 14， 2000？（）A The value of s is 14-dic-2000.B The value of s is Dec 14， 2000.C An exception is thrown at runtime.D Compilation fails because of an error in line 13.
问题：单选题Given a valid DateFormat object named df，and 16.Date d = new Date（0L）； 17.String ds = "December 15， 2004"； 18.//insert code here What updates d’s value with the date represented by ds？（）A 18. d = df.parse（ds）；B 18. d = df.getDate（ds）；C 18. try {19. d = df.parse（ds）；20. } catch（ParseException e） { }；D 18. try {19. d = df.getDate（ds）；20. } catch（ParseException e） { }；
问题：单选题Given： What is the result？（）ACompilation succeeds.BCompilation fails due to multiple errors.CCompilation fails due to an error only on line 20.DCompilation fails due to an error only on line 21.ECompilation fails due to an error only on line 22.
问题：单选题Given： What is the result？（）A1B12C14D123
问题：单选题Given： What is the result？（）A2.1.0B2.1.1C3.2.1D3.2.2
问题：多选题Given a class whose instances， when found in a collection of objects， are sorted by using the compare To method， which two statements are true？（）AThe class implements java.lang.Comparable.BThe class implements java.util.Comparator.CThe interface used to implement sorting allows this class to define only one sort sequence.DThe interface used to implement sorting allows this class to define many different sort sequences.
问题：多选题Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object？（）AWhen using versions of Java technology earlier than 5.0.BWhen sharing a StringBuffer among multiple threads.CWhen using the java.io class StringBufferInputStream.DWhen you plan to reuse the StringBuffer to build more than one string.
问题：单选题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 0B 1C 4D Compilation fails.
问题：单选题Given that the elements of a PriorityQueue are ordered according to natural ordering，and： What is the result？（）Aapple pearBbanana pearCapple appleDapple bananaEbanana banana
问题：单选题Given： 1.package test； 2. 3.class Target { 4.public String name = "hello"；5.} What can directly access and change the value of the variable name？（）A any classB only the Target classC any class in the test packageD any class that extends Target
问题：单选题A company that makes Computer Assisted Design （CAD） software has， within its application， some utilityclasses that are used to perform 3D rendering tasks. The company’s chief scientist has just improved theperformance of one of the utility classes’ key rendering algorithms， and has assigned a programmer toreplace the old algorithm with the new algorithm. When the programmer begins researching the utilityclasses， she is happy to discover that the algorithm to be replaced exists in only one class. The programmer reviews that class’s API， and replaces the old algorithm with the new algorithm， being carefulthat her changes adhere strictly to the class’s API. Once testing has begun， the programmer discovers thatother classes that use the class she changed are no longer working properly. What design flaw is mostlikely the cause of these new bugs？（）A InheritanceB Tight couplingC Low cohesionD High cohesionE Loose coupling
问题：单选题Given： What is the result？（）ATestABTestBCCompilation fails.DAn exception is thrown at runtime.
问题：单选题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 ）；
