String[] elements = { “for”, “tea”, “too” };  String first = (elements.length  0)? elements[0] null;  What is the result?()A、 Compilation fails.B、 An exception is thrown at runtime.C、 The variable first is set to null.D、 The variable first is set to elements[0].

String[] elements = { “for”, “tea”, “too” };  String first = (elements.length > 0)? elements[0] null;  What is the result?()

  • A、 Compilation fails.
  • B、 An exception is thrown at runtime.
  • C、 The variable first is set to null.
  • D、 The variable first is set to elements[0].

相关考题:

String[] elements={for,tea,too};String first=(elements.length0)?elements[0]null;What is the result?() A.Compilation fails.B.An exception is thrown at runtime.C.The variable first is set to null.D.The variable first is set to elements[0].

String[]elements={for”,tea”,too”};Stringfirst=(elements.length0)?elements[0]null;Whatistheresult?() A.Compilationfails.B.Anexceptionisthrownatruntime.C.Thevariablefirstissettonull.D.Thevariablefirstissettoelements[0].

Given:Which regular expression, inserted at line 12, correctly splits test into Test A, Test B, and Test C?() A.String regex=;B.String regex= .;C.String regex=.*;D.String regex=\\s;E.String regex=\\.\\s*;F.String regex=\\w[\.]+;

Given:String[]elements={for,tea,too};Stringfirst=(elements.length0)?elements[0]:null;Whatistheresult?() A.Compilationfails.B.Anexceptionisthrownatruntime.C.Thevariablefirstissettonull.D.Thevariablefirstissettoelements[0].

Given:Andthefollowingfivefragments:publicstaticvoidmain(String...a){publicstaticvoidmain(String.*a){publicstaticvoidmain(String...a){publicstaticvoidmain(String[]...a){publicstaticvoidmain(String...[]a){Howmanyofthecodefragments,insertedindependentlyatline2,compile?()A.0B.1C.2D.3E.4

下面哪个方法设置MIME类型?()A、setHeader(String headerName,String headerValue)B、setContentType(String mimeType)C、setContentLength(int length)D、addCookie(Cookie c)E、addHeader(String name,String value)

下面的哪些程序片断可能导致错误() A、String s = "Gone with the wind";  String t = " good ";  String k = s + t;B、String s = "Gone with the wind";  String t;  t = s[3] + "one";C、String s = "Gone with the wind";  String standard = s.toUpperCase();D、String s = "home directory"; String t = s - "directory"

Which statement is true for the class java.util.HashSet? () A、 The elements in the collection are ordered.B、 The collection is guaranteed to be immutable.C、 The elements in the collection are guaranteed to be unique.D、 The elements in the collection are accessed using a unique key.E、 The elements in the collections are guaranteed to be synchronized.

Which expressions will evaluate to true if preceded by the following code?()   String a = "hello";   String b = new String(a);   String c = a;   char[] d = { ’h’, ’e’, ’l’, ’l’, ’o’ };  A、(a == "Hello")B、(a == b)C、(a == c)D、a.equals(b)E、a.equals(d)

Which declarations will allow a class to be started as a standalone program?()  A、public void main(String args[])B、public void static main(String args[])C、public static main(String[] argv)D、final public static void main(String [] array)E、public static void main(String args[])

下面哪些语句能够正确地生成5个空字符串?()A、String a[]=new String[5];for(int i=0;i5;a[i++]=“”);B、String a[]={“”,“”,“”,“”,“”};C、String a[5];D、String[5]a;E、String[]a=new String[5];for(int i=0;i5;a[i++]=null);

Which of the following fragments might cause errors?()    A、 String s = "Gone with the wind";String t = " good ";String k = s + t;B、 String s = "Gone with the wind";String t;t = s[3] + "one";C、 String s = "Gone with the wind";String standard = s.toUpperCase();D、 String s = "home directory";String t = s - "directory";

11. String test = “Test A. Test B. Test C.”;  12. // insert code here  13. String[] result = test.split(regex);  Which regular expression inserted at line 12 will correctly split test into “Test A,” “Test B,” and “Test C”?()A、 String regex = “”;B、 String regex = “ “;C、 String regex = “.*“.D、 String regex = “//s”E、 String regex = “//.//s*”;F、 String regex = “//w[ /.] +“;

Given: 11.String test = "Test A. Test B. Test C."; 12.// insert code here 13.String[] result = test.split(regex); Which regular expression, inserted at line 12,correctly splits test into "Test A","Test B",and "Test C"?()A、String regex = "";B、String regex = " ";C、String regex = ".*";D、String regex = "//s";E、String regex = "//.//s*";

单选题You create a Web Form with several UI elements on it. During a code review, you realize that some of the UI elements can be grouped into user controls. You need to create a Web control to group the UI elements that do not require server-side processing. Doing so will enable you to programmatically add or remove the UI elements from the page. You want to maintain the UI elements' style properties. What should you do? ()AUse System.Web.UI.TemplateControl to group the UI elements.BUse System.Web.UI.HtmlControls.HtmlControl to group the UI elements.CUse System.Web.UI.LiteralControl to group the UI elements.DUse System.Web.UI.WebControls.Literal to group the UI elements.

单选题BO模板在Design模式下,可以编辑的内容有()AOnly Report Elements and FormattingBPage Setup、Data Access、Report Elements Analysis and FormattingCOnly Formatting、Data Access and AnalysisDOnly Data Access、Report Elements and Formatting

单选题String[] elements={"for","tea","too"}; String first=(elements.length0)?elements[0]null; What is the result?()ACompilation fails.BAn exception is thrown at runtime.CThe variable first is set to null.DThe variable first is set to elements[0].

单选题Why can’t we divide film into various elements for analysis?ABecause these elements are interwoven with each other and cannot be separated without failing to appreciate a film as a whole.BBecause films cannot be written down and it is inconvenient to analyze themCBecause films elements are too complicated.DBecause films need not to be analyzed in detail.

单选题1. import java.util.*;  2. public class TestSet {  3. enum Example { ONE, TWO, THREE }  4. public static void main(String[] args) {  5. Collection coll = new ArrayList();  6. coll.add(Example.THREE);  7. coll.add(Example.THREE);  8. coll.add(Example.THREE);  9. coll.add(Example.TWO);  10. coll.add(Example.TWO);  11. coll.add(Example.ONE);  12. Set set = new HashSet(coll);  13. }  14. }  Which statement is true about the set variable on line 12?()A The set variable contains all six elements from the coll collection, and the order is guaranteed to be preserved.B The set variable contains only three elements from the coll collection, and the order is guaranteed to be preserved.C The set variable contains all six elements from the coil collection, but the order is NOT guaranteed to be preserved.D The set variable contains only three elements from the coil collection, but the order is NOT guaranteed to be preserved.

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单选题Which statement is true for the class java.util.ArrayList?()A The elements in the collection are ordered.B The collection is guaranteed to be immutable.C The elements in the collection are guaranteed to be unique.D The elements in the collection are accessed using a unique key.E The elements in the collections are guaranteed to be synchronized.

单选题Given: String[] elements = { "for", "tea", "too" }; String first = (elements.length  0) ? elements[0] : null; What is the result?()ACompilation fails.BAn exception is thrown at runtime.CThe variable first is set to null.DThe variable first is set to elements[0].

单选题Which HttpSession method stores an object in a session?()A put(String name. Object value)B set(String name. Object value)C setAttribute(String name. Object value)D putAttribute(String name. Object value)E addAttribute(String name. Object value)

单选题11. String test = “Test A. Test B. Test C.”;  12. // insert code here  13. String[] result = test.split(regex);  Which regular expression inserted at line 12 will correctly split test into “Test A,” “Test B,” and “Test C”?()A String regex = “”;B String regex = “ “;C String regex = “.*“.D String regex = “//s”E String regex = “//.//s*”;F String regex = “//w[ /.] +“;

单选题lisa is writing a formula to determine the number of elements in a list. she wants to ensure that a value is returned, even if the value her function is evaluating turns out to be a null string . which one of the following can she so to accomplish this ?()Ause a defaule formula of 1 Buse @elements and add 1 to the total Cuse the @count function instead of @elements Duse @texttotime to ensure that all strings arte converted to date-time values

单选题The anthropologists would have considered their research a success if they would have found a language that shares lexical elements with the Borneans they were studying.Aif they would have found a language that shares lexical elements with the Borneans they were studyingBhad they found a language that shares lexical elements with that of the Borneans they were studyingCif they found a language that shares lexical elements with the Borneans they were studyingDif they had found a language that shares lexical elements with the Borneans they were studyingEif they would have found a language that shares lexical elements with that of the Borneans they were studying

单选题Given: Which regular expression, inserted at line 12, correctly splits test into "Test A", "Test B", and "Test C"?()A String regex="";B String regex=" .";C String regex=".*";D String regex="//s";E String regex="//.//s*";F String regex="//w[/.]+";