当前分类： OCJP(310-065)
问题：单选题A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards. Poker What allows the user to do this？（）A put Poker.jar in directory /stuff/...
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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.readLin...
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 fi...
问题：单选题Given： What is the result？（）A Compilation succeeds.B Compilation fails due to multiple errors.C Compilation fails due to an error only on line 20.D Compilation fails due to an error only on line 21.E Compilation fails due to an error only on line...
问题：多选题Which two code fragments are most likely to cause a StackOverflowError？（）Aint []x = {1，2，3，4，5}；for（int y = 0； y 6； y++） System.out.println（x[y]）；Bstatic int[] x = {7，6，5，4}；static { x[1] = 8；x[4] = 3； }Cfor（int y = 10； y 10； y++）doStuff（y）；Dvoid ...
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 va...
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 =...
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 StringBufferInput...
问题：单选题Given a method that must ensure that its parameter is not null： 11. public void someMethod（Object value） { 12. // check for null value ... 20. System.out.println（value.getClass（））； 21. } What inserted at line 12， is the appropriate way to handle a null...
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：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 t...
问题：单选题Given： What is the result？（）A No output is produced. 1 2 3B No output is produced. 2 3 4C No output is produced. 1 2 3 4D An exception is thrown at runtime. 1 2 3...
问题：单选题Given that the elements of a PriorityQueue are ordered according to natural ordering，and： What is the result？（）A apple pearB banana pearC apple appleD apple bananaE banana banana...
问题：多选题A company has a business application that provides its users with many different reports： receivables reports， payables reports， revenue projects， and so on. The company has just purchased somenew， state-of-the-art， wireless printers， and a programmer ...
问题：单选题Click the Exhibit button. What is the result？（）A Compilation of class A fails.B Line 28 prints the value 3 to System.out.C Line 28 prints the value 1 to System.out.D A runtime error occurs when line 25 executes.E Compilation fails because of an e...
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 fro...
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...
