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多选题
Click the Exhibit button. Given: Which two statements are true if a NullPointerException is thrown on line 3 of class C? （）
A
The application will crash.
B
The code on line 29 will be executed.
C
The code on line 5 of class A will execute.
D
The code on line 5 of class B will execute.
E
The exception will be propagated back to line 27.
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更多 “多选题Click the Exhibit button. Given: Which two statements are true if a NullPointerException is thrown on line 3 of class C? （）AThe application will crash.BThe code on line 29 will be executed.CThe code on line 5 of class A will execute.DThe code on line 5 of class B will execute.EThe exception will be propagated back to line 27.” 相关考题
考题
Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?()
A.Compilation will succeed for all classes and interfaces.B.Compilation of class C will fail because of an error in line 2.C.Compilation of class C will fail because of an error in line 6.D.Compilation of class AImpl will fail because of an error in line 2
考题
Given:Which three methods, inserted individually at line 14, will correctly complete class Two?()
A.int foo() { /* more code here */ }B.void foo() { /* more code here */ }C.public void foo() { /* more code here */ }D.private void foo() { /* more code here */ }E.protected void foo() { /* more code here */ }
考题
Given:Which code, inserted at line 15, creates an instance of the Point class defined in Line?()
A.Point p = new Point();B.Line.Point p = new Line.Point();C.The Point class cannot be instatiated at line 15.D.Line l = new Line() ; l.Point p = new l.Point();
考题
Given:Under which three circumstances will the code on line 37 be executed?()
A.The instance gets garbage collected.B.The code on line 33 throws an exception.C.The code on line 35 throws an exception.D.The code on line 31 throws an exception.E.The code on line 33 executes successfully.
考题
Click the Exhibit button. Given:Which statement is true if a TestException is thrown on line 3 of class B? ()
A.Line 33 must be called within a try block.B.The exception thrown by method1 in class A is not required to be caught.C.The method declared on line 31 must be declared to throw a RuntimeException.D.On line 5 of class A, the call to method2 of class B does not need to be placed in a try/catch block.
考题
Click the Exhibit button.Given:What is the result?()
A.Line 26 prints a to System.out.B.Line 26 prints b to System.out.C.An exception is thrown at line 26 at runtime.D.Compilation of class A will fail due to an error in line 6.
考题
Click the Exhibit button. Given:Which two statements are true if a NullPointerException is thrown on line 3 of class C? ()
A.The application will crash.B.The code on line 29 will be executed.C.The code on line 5 of class A will execute.D.The code on line 5 of class B will execute.E.The exception will be propagated back to line 27.
考题
1.class TestSuper { 22.TestSuper（int i） { } 3. } 4.class TestSub extends TestSuper{ } 5.class TestAll { 6.public static void main （String [] args） { 7.new TestSub（）； 8.} 9.} Which is true？（） A、 Compilation fails.B、 The code runs without exception.C、 An exception is thrown at line 7.D、 An exception is thrown at line 2.
考题
You are working on a debug build of an application.You need to find the line of code that caused an exception to be thrown. Which property of the Exception class should you use to achieve this goal？（）A、DataB、MessageC、Stack TraceD、Source
考题
10. class Line { 11. public static class Point { } 12. } 13. 14. class Triangle { 15. // insert code here 16. } Which code， inserted at line 15， creates an instance of the Point class defined in Line？（） A、 Point p = new Point（）；B、 Line.Point p = new Line.Point（）；C、 The Point class cannot be instatiated at line 15.D、 Line 1 = new Line（） ； 1.Point p = new 1.Point（）；
考题
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 { 2. public void method3（） { 3. // more code here 4. } 5. } Given： 25. try { 26. A a=new A（）； 27. a.method1（）； 28. } catch （Exception e） { 29. System.out.print（”an error occurred”）； 30. } Which two are true if a NullPointerException is thrown on line 3 of class C？（）A、 The application will crash.B、 The code on line 29 will be executed.C、 The code on line 5 of class A will execute.D、 The code on line 5 of class B will execute.E、 The exception will be propagated back to line 27.
考题
Given the following code fragment： public void create（） { Vector myVect； myVect = new Vector（）； } Which of the following statements are true？（） A、 The declaration on line 2 does not allocate memory space for the variable myVect.B、 The declaration on line 2 allocates memory space for a reference to a Vector object.C、 The statement on line 2 creates an object of class Vector.D、 The statement on line 3 creates an object of class Vector.E、 The statement on line 3 allocates memory space for an object of class Vector.
考题
Given the following code： 1） class Parent { 2） private String name； 3） public Parent（）{} 4） } 5） public class Child extends Parent { 6） private String department； 7） public Child（） {} 8） public String getValue（）{ return name； } 9） public static void main（String arg[]） { 10） Parent p = new Parent（）； 11） } 12） } Which line will cause error？（） A、 line 3B、 line 6C、 line 7D、 line 8E、 line 10
考题
10. class Line { 11. public class Point { public int x，y； } 12. public Point getPoint（） { return new Point（）； } 13. } 14. class Triangle { 15. public Triangle（） { 16. // insert code here 17. } 18. } Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（） A、 Point p = Line.getPoint（）；B、 Line.Point p = Line.getPoint（）；C、 Point p = （new Line（））.getPoint（）；D、 Line.Point p = （new Line（））.getPoint（）；
考题
Given： 10. class One { 11. void foo（） { } 12. } 13. class Two extends One { 14. //insert method here 15. } Which three methods， inserted individually at line 14， will correctly complete class Two？（）A、 public void foo（） { /* more code here */ }B、 private void foo（） { /* more code here */ }C、 protected void foo（） { /* more code here */ }D、 int foo（） { /* more code here */ } E、 void foo（） { /* more code here */ }
考题
You work as an application developer at Certkiller .com. Certkiller .com has instructed you to create a class named MetricFormula. This class will be used to compare MetricUnit and EnglishUnit objects.The MetricFormula is currently defined as follows （Line numbers are used for reference purposes only）： 1. public class MetricFormula2. { 3. 4. } You need to ensure that the MetricFormula class can be used to compare the required objects. What should you do？ （）A、 Add the following code on line 1： ： IComparable {B、 Add the following code on line 1： ： IComparer {C、 Add the following code on line 3： public int Compare （object x， object y） {// implementation code }D、 Add the following code on line 3： public int CompareTo （object obj） {// implementation code }
考题
多选题You work as an application developer at Certkiller .com. Certkiller .com has instructed you to create a class named MetricFormula. This class will be used to compare MetricUnit and EnglishUnit objects.The MetricFormula is currently defined as follows （Line numbers are used for reference purposes only）： 1. public class MetricFormula2. { 3. 4. } You need to ensure that the MetricFormula class can be used to compare the required objects. What should you do？ （）AAdd the following code on line 1： ： IComparable {BAdd the following code on line 1： ： IComparer {CAdd the following code on line 3： public int Compare （object x， object y） {// implementation code }DAdd the following code on line 3： public int CompareTo （object obj） {// implementation code }
考题
多选题Given： 10. class One { 11. void foo（） { } 12. } 13. class Two extends One { 14. //insert method here 15. } Which three methods， inserted individually at line 14， will correctly complete class Two？（）Apublic void foo（） { /* more code here */ }Bprivate void foo（） { /* more code here */ }Cprotected void foo（） { /* more code here */ }Dint foo（） { /* more code here */ }Evoid foo（） { /* more code here */ }
考题
单选题Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）A
Compilation will succeed for all classes and interfaces.B
Compilation of class C will fail because of an error in line 2.C
Compilation of class C will fail because of an error in line 6.D
Compilation of class AImpl will fail because of an error in line 2.
考题
多选题Given: Which three methods, inserted individually at line 14, will correctly complete class Two?（）Aint foo() { /* more code here */ }Bvoid foo() { /* more code here */ }Cpublic void foo() { /* more code here */ }Dprivate void foo() { /* more code here */ }Eprotected void foo() { /* more code here */ }
考题
单选题Click the Exhibit button. Given this code from Class B： 25.A a1 = new A（）； 26.A a2 = new A（）； 27.A a3 = new A（）； 28.System.out.println（A.getInstanceCount（））； 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 error on line 28.
考题
单选题Click the Exhibit button. Given this code from Class B： 25. A a1 = new A（）； 26. A a2 = new A（）； 27. A a3 = new A（）； 28. System.out.println（A.getInstanceCount（））； 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
Compilation fails because of an error on line 28.E
A runtime error occurs when line 25 executes.
考题
单选题Click the Exhibit button. What is the result？（）A
Line 26 prints "a" to System.out.B
Line 26 prints "b" to System.out.C
An exception is thrown at line 26 at runtime.D
Compilation of class A will fail due to an error in line 6.
考题
多选题Given the following code fragment： public void create（） { Vector myVect； myVect = new Vector（）； } Which of the following statements are true？（）AThe declaration on line 2 does not allocate memory space for the variable myVect.BThe declaration on line 2 allocates memory space for a reference to a Vector object.CThe statement on line 2 creates an object of class Vector.DThe statement on line 3 creates an object of class Vector.EThe statement on line 3 allocates memory space for an object of class Vector.
考题
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 { 2. public void method3（） { 3. // more code here 4. } 5. } Given： 25. try { 26. A a=new A（）； 27. a.method1（）； 28. } catch （Exception e） { 29. System.out.print（”an error occurred”）； 30. } Which two are true if a NullPointerException is thrown on line 3 of class C？（）AThe application will crash.BThe code on line 29 will be executed.CThe code on line 5 of class A will execute.DThe code on line 5 of class B will execute.EThe exception will be propagated back to line 27.
考题
单选题10. class Line { 11. public static class Point { } 12. } 13. 14. class Triangle { 15. // insert code here 16. } Which code， inserted at line 15， creates an instance of the Point class defined in Line？（）A
Point p = new Point（）；B
Line.Point p = new Line.Point（）；C
The Point class cannot be instatiated at line 15.D
Line 1 = new Line（） ； 1.Point p = new 1.Point（）；
考题
多选题class One { void foo（） {} } class Two extends One { //insert method here } Which three methods， inserted individually at line 14， will correctly complete class Two？（）Aint foo（） { /* more code here */ }Bvoid foo（） { /* more code here */ }Cpublic void foo（） { /* more code here */ }Dprivate void foo（） { /* more code here */ }Eprotected void foo（） { /* more code here */ }
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