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单选题
It is desirable that a certain method within a certain class can only be accessed by classes that are defined within the same package as the class of the method. How can such restrictions be enforced？（）
A
Mark the method with the keyword public.
B
Mark the method with the keyword protected.
C
Mark the method with the keyword private.
D
Mark the method with the keyword package.
E
Do not mark the method with any accessibility modifiers.
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更多 “单选题It is desirable that a certain method within a certain class can only be accessed by classes that are defined within the same package as the class of the method. How can such restrictions be enforced？（）A Mark the method with the keyword public.B Mark the method with the keyword protected.C Mark the method with the keyword private.D Mark the method with the keyword package.E Do not mark the method with any accessibility modifiers.” 相关考题
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1. public class a { 2. public void method1（） { 3. try { 4. B b=new b（）； 5. b.method2（）； 6. // more code here 7. } catch （TestException te） { 8. throw new RuntimeException（te）； 9. } 10. } 11. } 1. public class b { 2. public void method2（） throws TestException { 3. // more code here 4. } 5. } 1. public class TestException extends Exception { 2. } Given： 31. public void method（） { 32. A a=new a（）； 33. a.method1（）； 34. } Which 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.
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It is desirable that a certain method within a certain class can only be accessed by classes that are defined within the same package as the class of the method. How can such restrictions be enforced？（） A、Mark the method with the keyword public.B、Mark the method with the keyword protected.C、Mark the method with the keyword private.D、Mark the method with the keyword package.E、Do not mark the method with any accessibility modifiers.
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考题
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多选题Which lines of code are valid declarations of a native method when occurring within the declaration of the following class？（） public class Qf575 { // insert declaration of a native method here }Anative public void setTemperature（int kelvin）；Bprivate native void setTemperature（int kelvin）；Cprotected int native getTemperature（）；Dpublic abstract native void setTemperature（int kelvin）；Enative int setTemperature（int kelvin） {}
考题
单选题It is desirable that a certain method within a certain class can only be accessed by classes that are defined within the same package as the class of the method. How can such restrictions be enforced？（）A
Mark the method with the keyword public.B
Mark the method with the keyword protected.C
Mark the method with the keyword private.D
Mark the method with the keyword package.E
Do not mark the method with any accessibility modifiers.
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he sometimes wants to confuse the buyersB
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考题
单选题Which methods from the String and StringBuffer classes modify the object on which they are called？（）A
The charAt（） method of the String class.B
The toUpperCase（） method of the String class.C
The replace（） method of the String class.D
The reverse（） method of the StringBuffer class.E
The length（） method of the StringBuffer class.
考题
单选题An oil tanker，except as provided for otherwise，might discharge certain amount at certain rate of oil or oily mixtures into sea when（）.A
she is not within a special areaB
she is within a special areaC
she has just departured from a special areaD
she is about to enter a special area
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单选题Except as provided for otherwise，an oil tanker might discharge certain amount at certain rate of oil or oily mixtures into sea when（）.A
the tanker is within 50 nautical miles from the nearest landB
the tanker is no more than 50 nautical miles from the nearest landC
the tanker is more than 50 nautical miles from the nearest landD
the tanker is not more than 50 nautical miles from the nearest land
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单选题Sometimes the charter-party（）that the vessel must only use safe ports within a certain area.A
improvesB
installsC
containsD
requests
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单选题1. public class a { 2. public void method1（） { 3. try { 4. B b=new b（）； 5. b.method2（）； 6. // more code here 7. } catch （TestException te） { 8. throw new RuntimeException（te）； 9. } 10. } 11. } 1. public class b { 2. public void method2（） throws TestException { 3. // more code here 4. } 5. } 1. public class TestException extends Exception { 2. } Given： 31. public void method（） { 32. A a=new a（）； 33. a.method1（）； 34. } Which 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
多选题Which two statements are true about the hashCode method？（）AThe hashCode method for a given class can be used to test for object equality and object inequality for that class.BThe hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.CThe hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.DThe only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.EThe hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.
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