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问题：Which of the following statements are legal？（） ...
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问题：单选题1. public class test （ 2. public static void main（string args[]） { 3. int 1= 0； 4. while （i） { 5. if （i==4） { 6. break； 7. } 8. ++i； 9. } 10. 11. } 12. ） What is the value of i at line 10？（）A 0B 3C 4D 5E The code will not compile....
问题：多选题class A { } class Alpha { private A myA = new A（）； void dolt（ A a ） { a = null； } void tryIt（） { dolt（ myA ）； } } Which two statements are correct？（）AThere are no instanced of A that will become eligible for garbage collection.BExplicitly se...
问题：单选题What will be written to the standard output when the following program is run？（） public class Q63e3 { public static void main（String args[]） { System.out.println（9 ^ 2）； } }A 81B 7C 11D 0E false...
问题：11. public enum Title { 12. MR（”Mr.”）， MRS（”Mrs.”）， MS（”Ms....
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 text from the console？（）AString s = c.readLine（）；Bchar[ ] c = c.readLine（）；CString s = c.readConsole（）；Dchar[ ] c = c.readConsole（）；EString s = c.rea...
问题：单选题Which Man class properly represents the relationship “Man has a best friend who is a Dog”？（）A class Man extends Dog { }B class Man implements Dog { }C class Man { private BestFriend dog； }D class Man { private Dog bestFriend； }E class Man { privat...
问题：单选题public class Foo { public void main（ String[] args ） { System.out.println（ “Hello” + args[0] ）； } } What is the result if this code is executed with the command line？（）A HelloB Hello FooC Hello worldD Compilation fails.E The code does not ru...
问题：单选题package foo； import java.util.Vector； private class MyVector extends Vector { int i = 1； public MyVector（） { i = 2； } } public class MyNewVector extends MyVector { public MyNewVector （） { i = 4； } public static void main （String a...
问题：interface Data { public void load（）； } abstract class Info ...
问题：多选题A team of programmers is reviewing a proposed API for a new utility class.After some discussion， they realize that they can reduce the number of methods in the API without losing any functionality.If they implement the new design， which two principles ...
问题：Which method is an appropriate way to determine the cosine o...
问题：多选题Which statements concerning casting and conversion are true？（）AConversion from int to long does not need a cast.BConversion from byte to short does not need a cast.CConversion from float to long does not need a cast.DConversion from short to char does ...
问题：多选题Which two statements are reserved words in Java？（）ARunBImportCDefaultDImplement...
问题：单选题How can you create a listener class that receives events when the mouse is moved？（）A By extending MouseListener.B By implementing MouseListener.C By extending MouseMotionListener.D By implementing MouseMotionListener.E Either by extending MouseMot...
问题：单选题11. rbo = new ReallyBigObject（）； 12. // more code here 13. rbo = null； 14. /* insert code here */ Which statement should be placed at line 14 to suggest that the virtual machine expend effort toward recycling the memory used by the object rbo？（）A ...
问题：单选题public class X { public static void main （Stringargs） { string s = new string （“Hello”）； modify（s）； System.out.printIn（s）； } public static void modify （String s） { s += “world!”； } } What is the result？（）A The program runs and print...
问题：Which statement is true for the class java.util.ArrayList？（）...
问题：多选题1. public class A { 2. public void method1（） { 3. B b=new B（）； 4. b.method2（）； 5. // more code here 6. } 7. } 1. public class B { 2. public void method2（） { 3.C c=new C（）； 4. c.method3（）； 5. // more code here 6. } 7. } 1. public class C {...
问题：public class A extends Thread { A（） { setDaemon（true）； } ...
