publicclassTest{privatestaticint[]x;publicstaticvoidmain(String[]args){System.out.println(x[0]);}}Whatistheresult?() A.0B.nullC.Compilationfails.D.ANullPointerExceptionisthrownatruntime.E.AnArrayIndexOutOfBoundsExceptionisthrownatruntime.
publicclassTest{privatestaticint[]x;publicstaticvoidmain(String[]args){System.out.println(x[0]);}}Whatistheresult?()
A.0
B.null
C.Compilationfails.
D.ANullPointerExceptionisthrownatruntime.
E.AnArrayIndexOutOfBoundsExceptionisthrownatruntime.
相关考题：
执行下面程序段，屏幕上将输出( )。 public class Test { private int x=10，y=20； public Test (int x，int y) { System.out.println (x+this.x)； System.out.println (y+y)； } public static void main (String[] args) { Testt= new Test(30，50)； } }A．无输出B．20 40C．40 100D．40 70
classRectangle{publicstaticvoidmain(String[]args){int[]x={1,2,3};x[1]=(x[1]〉1)?x[2]:0;System.out.println(x[1]);}}结果为:() A.0B.1C.2D.3
publicstaticvoidmain（String[]args）{try{args=null；args[0]=test”；System.out.println（args[0]）；}catch（Exceptionex）{System.out.println（”Exception”）；}catch（NullPointerExceptionnpe）{System.out.println（”NullPointerException”）；}}Whatistheresult？（）A.testB.ExceptionC.Compilationfails.D.NullPointerException
下列语句序列执行后,x的值是_________。publicclasstest{publicstaticvoidmain(string[]args){inta=2;intb=3;intx=4;x=＋＋a*x;system.out.println(x);}} A.13B.10C.11D.12
publicclassTest{publicstaticvoidmain(String[]args){Stringstr=NULL;System.out.println(str);}}Whatistheresult?() A.NULLB.Compilationfails.C.Thecoderunswithnooutput.D.Anexceptionisthrownatruntime.
publicclassTest{publicstaticvoidmain(String[]args){intx=0;assert(x0)?assertionfailed”:assertionpassed”;System.out.println(Finished”);}}Whatistheresult?() A.finishedB.Compilationfails.C.AnAssertionErroristhrownandfinishedisoutput.D.AnAssertionErroristhrownwiththemessage“assertionfailed”.E.AnAssertionErroristhrownwiththemessage“assertionpassed”.
publicclassTest{publicstaticvoidmain(String[]args){intx=0;assert(x>0):“assertionfailed”;System.out.println(“finished”);}}Whatistheresult?() A.finishedB.Compilationfails.C.AnAssertionErroristhrown.D.AnAssertionErroristhrownandfinishedisoutput.
packagetest1;publicclassTest1{staticintx=42;}packagetest2;publicclassTest2extendstest1.Test1{publicstaticvoidmain(String[]args){System.out.println(x=＋x);}}Whatistheresult?() A.x=0B.x=42C.Compilationfailsbecauseofanerrorinline2ofclassTest2.D.Compilationfailsbecauseofanerrorinline3ofclassTest1.E.Compilationfailsbecauseofanerrorinline4ofclassTest2.
interface A{int x = 0;}class B{int x =1;}class C extends B implements A {public void pX(){System.out.println(x);}public static void main(String[] args) {new C().pX();}}