当前分类： OCJP(310-065)
问题：单选题A UNIX user named Bob wants to replace his chess program with a new one， but he is not sure where theold one is installed. Bob is currently able to run a Java chess program starting from his home directory /home/bob using the command： java -classpath /...
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问题：单选题Given： What is the result？（）A r， t， t，B r， e， o，C Compilation fails.D An exception is thrown at runtime....
问题：单选题Given： What is the result？（）A 5，6B 5，5C 6，5D 6，6...
问题：单选题Given： What is the result？（）A Compilation fails.B An exception is thrown at runtime.C The code executes normally and prints "sleep".D The code executes normally， but nothing is printed....
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： Which code， inserted at line 16， will cause a java.lang.ClassCastException？（）A Alpha a = x；B Foo f = （Delta）x；C Foo f = （Alpha）x；D Beta b = （Beta）（Alpha）x；...
问题：单选题Given： Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）A Line 16B Line 17C Line 18D Line 19...
问题：单选题Given： 11.String test = "a1b2c3"； 12.String[] tokens = test.split（"//d"）； 13.for（String s： tokens） System.out.print（s + " "）； What is the result？（）A a b cB 1 2 3C a1b2c3D a1 b2 c3...
问题：多选题Given： Which three are true？（）ACat is-a AnimalBCat is-a JumperCDog is-a AnimalDDog is-a JumperECat has-a AnimalFBeagle has-a Tail...
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A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add（0， object）， but does NOT need to support quick random access. What supports these requirements？（）A java.util.QueueB java.util.ArrayListC java....
问题：多选题Click the Exhibit button. What two must the programmer do to correct the compilation errors？（）Ainsert a call to this（） in the Car constructorBinsert a call to this（） in the MeGo constructorCinsert a call to super（） in the MeGo constructorDinsert a cal...
问题：多选题Given： Which two， placed on line 13， will produce the output gobstopper？（）ASystem.load（"prop.custom"）；BSystem.getenv（"prop.custom"）；CSystem.property（"prop.custom"）；DSystem.getProperty（"prop.custom"）；ESystem.getProperties（）.getProperty（"prop.custom"）；...
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/...
问题：多选题Which three will compile and run without exception？（）Aprivate synchronized Object o；Bvoid go（） {synchronized（） { /* code here */ }Cpublic synchronized void go（） { /* code here */ }Dprivate synchronized（this） void go（） { /* code here */ }Evoid go（） {syn...
