当前分类： OCJP(310-065)
问题：多选题Given： 35.String #name = "Jane Doe"； 36.int $age = 24； 37.Double _height = 123.5； 38.double ~temp = 37.5； Which two statements are true？（）ALine 35 will not compile.BLine 36 will not compile.CLine 37 will not compile.DLine 38 will not compile....
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问题：单选题Given： What is the result？（）A 5，6B 5，5C 6，5D 6，6...
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：单选题Given: What is the result？（）A [1， 2， 3， 5]B [2， 1， 3， 5]C [2， 5， 3， 1]D [5， 3， 2， 1]E [1， 3， 5， 2]...
问题：多选题Given 11.public interface Status { 12./* insert code here */ int MY_VALUE = 10； 13.} Which three are valid on line 12？（）AfinalBstaticCnativeDpublicEprivate...
问题：单选题Given： What is the result？（）A 1B 12C 14D 123...
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：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：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...
问题：单选题Given the following six method names： add Listener add Mouse Listener set Mouse Listener delete Mouse Listener remove Mouse Listener register Mouse Listener How many of these method names follow JavaBean Listener naming rules？（）A 1B 2C 3D 4...
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： What is the result？（）A r， t， t，B r， e， o，C Compilation fails.D An exception is thrown at runtime....
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： 22.StringBuilder sb1 = new StringBuilder（"123"）； 23.String s1 = "123"； 24.// insert code here 25.System.out.println（sb1 + " " + s1）； Which code fragment， inserted at line 24， outputs "123abc 123abc"？（）A sb1.append（abc）； s1.append（abc）；B sb1.appe...
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...
