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Stringtest=Thisisatest”;12.String[]tokens=test.split(”\s”);13.System.out.println(tokens.length);Whatistheresult?()
A.0
B.1
C.4
D.Compilationfails.
E.Anexceptionisthrownatruntime.
参考答案
更多 “ Stringtest=Thisisatest”;12.String[]tokens=test.split(”\s”);13.System.out.println(tokens.length);Whatistheresult?() A.0B.1C.4D.Compilationfails.E.Anexceptionisthrownatruntime. ” 相关考题
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11.publicstaticvoidtest（Stringstr）{12.if（str==null|str.lellgth（）==0）{13.System.out.println（”Stringisempty”）；14.}else{15.System.out.println（”Stringisnotempty”）；16.}17.}Andtheinvocation：31.test（llull）；Whatistheresult？（）A.Auexceptionisthrownatruntime.B.“Stringisempty”isprintedtooutput.C.Compilationfailsbecauseofauerrorinline12.D.“Stringisnotempty”isprintedtooutput.
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Stringtest=TestA.TestB.TestC.”;12.／／insertcodehere13.String[]result=test.split(regex);Whichregularexpressioninsertedatline12willcorrectlysplittestintoTestA,”TestB,”andTestC”?()
A.Stringregex=“”；B.Stringregex=““；C.Stringregex=“.*“.D.Stringregex=“\\s”E.Stringregex=“\\.\\s*”；F.Stringregex=“\\w[\.]+“；
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Stringtest=a1b2c3”;12.String[]tokens=test.split(”\\d”);13.for(Strings:tokens)System.out.print(s＋);Whatistheresult?()
A.abcB.123C.a1b2c3D.a1b2c3E.Compilationfails.F.Thecoderunswithnooutput.G.Anexceptionisthrownatruntime.
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intindex=1;Stringtest=newString;Stringfoo=test[index];Whatistheresult?()
A. Foohasthevalue“”B.FoohasthevaluenullC.AnexceptionisthrownD.Thecodewillnotcompile
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publicclassfoo{publicstaticvoidmain(Stringargs){Strings;system.out.printIn(s=”＋s);}}Whatistheresult?()
A.Thecodecompilesand“s=”isprinted.B.Thecodecompilesand“s=null”isprinted.C.Thecodedoesnotcompilebecausestringsisnotinitialized.D.Thecodedoesnotcompilebecausestringscannotbereferenced.E.Thecodecompiles，butaNullPointerExceptionisthrownwhentoStringiscalled.
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Given:11.Stringtest=Thisisatest;12.String[]tokens=test.split(\s);13.System.out.println(tokens.length);Whatistheresult?()
A.Anexceptionisthrownatruntime.B.1C.4D.Compilationfails.E.0
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Given:11.Stringtest=Thisisatest;12.String[]tokens=test.split(\s);13.System.out.println(tokens.length);Whatistheresult?()
A.0B.1C.4D.Compilationfails.
考题
Given:11.Stringtest=a1b2c3;12.String[]tokens=test.split(\\d);13.for(Strings:tokens)System.out.print(s＋);Whatistheresult?()
A.abcB.123C.a1b2c3D.a1b2c3
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Given：11.Stringtest=TestA.TestB.TestC.；12.//insertcodehere13.String[]result=test.split（regex）；Whichregularexpression，insertedatline12，correctlysplitstestintoTestA，TestB，andTestC？（）A.Stringregex=；B.Stringregex=；C.Stringregex=.*；D.Stringregex=\\s；E.Stringregex=\\.\\s*；
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