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publicclassX{publicstaticvoidmain(String[]args){strings=newstring(Hello”);modify(s);System.out.printIn(s);}publicstaticvoidmodify(Strings){s＋=world!”;}}Whatistheresult?()
A.Theprogramrunsandprints“Hello”
B.Anerrorcausescompilationtofail.
C.Theprogramrunsandprints“Helloworld!”
D.Theprogramrunsbutabortswithanexception.
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更多 “ publicclassX{publicstaticvoidmain(String[]args){strings=newstring(Hello”);modify(s);System.out.printIn(s);}publicstaticvoidmodify(Strings){s＋=world!”;}}Whatistheresult?() A.Theprogramrunsandprints“Hello”B.Anerrorcausescompilationtofail.C.Theprogramrunsandprints“Helloworld!”D.Theprogramrunsbutabortswithanexception. ” 相关考题
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A.Theprogramrunsandprintsnothing.B.Theprogramrunsandprints“Equal”C.Anerroratline5causescompilationtofail.D.Theprogramrunsbutabortswithanexception.
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publicclassfoo{publicstaticvoidmain(String[]args){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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publicclassX{publicstaticvoidmain(Stringargs){strings=newstring(Hello”);modify(s);System.out.printIn(s);}publicstaticvoidmodify(Strings){s＋=world!”;}}Whatistheresult?()
A.Theprogramrunsandprints“Hello”B.Anerrorcausescompilationtofail.C.Theprogramrunsandprints“Helloworld!”D.Theprogramrunsbutabortswithanexception.
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publicclassX{publicstaticvoidmain(Stringargs){Strings1=newString(true”);Booleanb1=newBoolean(true);if(s2.equals(b1)){System.out.printIn(Equal”);}}}Whatistheresult?()
A.Theprogramrunsandprintsnothing.B.Theprogramrunsandprints“Equal”C.Anerroratline5causescompilationtofail.D.Theprogramrunsbutabortswithanexception.
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写出以下程序的运行结果？ public class Test{ public static void main（String argv[]){ String s = new String（"hello"); myMethod（s); System.out.print（"s=" + s); } public static void myMethod（String s){ s = s + "!"; } }A．s=hello!B．s=helloC．hello!D．hello
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