Given a method that must ensure that its parameter is not null： 11. public void someMethod（Object value） { 12. // check for null value ... 20. System.out.println（value.getClass（））； 21. } What inserted at line 12， is the appropriate way to handle a null v

题目

Given a method that must ensure that its parameter is not null： 11. public void someMethod（Object value） { 12. // check for null value ... 20. System.out.println（value.getClass（））； 21. } What inserted at line 12， is the appropriate way to handle a null value？（）

A、assert value == null；
B、assert value != null， "value is null"；
C、if （value == null） { throw new AssertionException（"value is null"）； }
D、if （value == null） { throw new IllegalArgumentException（"value is null"）； }

如果没有搜索结果或未解决您的问题，请直接联系老师获取答案。

相似问题和答案

第1题：

Given:What is the result when method testIfA is invoked?()

A.True

B.Not true

C.An exception is thrown at runtime.

D.Compilation fails because of an error at line 12.

E.Compilation fails because of an error at line 19.

参考答案：A

第2题：

Given:Which two can be results?()

A. java.lang.RuntimeException: Problem

B. run.java.lang.RuntimeException: Problem

C. End of method.java.lang.RuntimeException: Problem

D. End of method.run.java.lang.RuntimeException: Problem

E. run.java.lang.RuntimeException: Problem End of method.

参考答案：D, E

第3题：

public class Test{2.int x=12;3.public void method(intx){4.x＋=x;5.System.out.println(x);6.}7.}Given:34.Test t=new Test();35.t.method(5);What is the output from line 5 of the Test class?()

A.5

B.10

C.12

D.17

E.24

参考答案：B

第4题：

1. public class Test { 2. int x= 12； 3. public void method（int x） { 4. x+=x； 5. System.out.println（x）； 6. } 7. } Given： 34. Test t = new Test（）； 35. t.method（5）； What is the output from line 5 of the Test class？（）

A、 5
B、 10
C、 12
D、 17
E、 24

正确答案:B

第5题：

Which two statements are true about the hashCode method？（）

A、 The hashCode method for a given class can be used to test for object equality and object inequality for that class.
B、 The hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.
C、 The hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.
D、 The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.
E、 The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.

正确答案:C,E

第6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.

参考答案：B

第7题：

T/T is a quicker method of payment than a banker’s demand draft.

A对

B错

对
略

第8题：

Given:What is the result when the go() method is invoked?()

A.00

B.0001

C.000120

D.00012021

E.Compilation fails.

F.An exception is thrown at runtime.

参考答案：C

第9题：

Given： 6. 7.<%="processing" %> 8. and a custom tag handler for foo which extends TagSupport. Which two are true about thetag handler referenced by foo？（）

A、The doStartTag method is called once.
B、The doAfterBody method is NOT called.
C、The EVAL_PAGE constant is a valid return value for the doEndTag method.
D、The SKIP_PAGE constant is a valid return value for the doStartTag method.
E、The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.

正确答案:A,C

第10题：

Given the ActionEvent， which method allows you to identify the affected component？（）

A、 GetClass.
B、 GetTarget.
C、 GetSource.
D、 GetComponent.
E、 GetTargetComponent.

正确答案:C

Given a method t

题目

相似问题和答案

更多相关问题

相关内容