单项选择题
A. Base
B. BaseBase
C. Compilation fails.
D. The code runs with no output.
E. An exception is thrown at runtime.
单项选择题 10.publicObjectm(){11.Objecto=newFloat(3.14F);12.Object[]oa=newObject[1];13.oa[0]=o;14.o=null;15.returnoa[0];16.}WhenistheFloatobject,createdinline11,eligibleforgarbagecollection?()
填空题 1.publicclassTest{2.publicstaticStringoutput=””;3.4.publicstaticvoidfoo(inti){5.try{6.if(i==1){7.thrownewException();8.}9.output+=“1”;10.}11.catch(Exceptione){12.output+=“2”;13.return;14.}15.finally{16.output+=“3”;17.}18.output+=“4”;19.}20.21.publicstaticvoidmain(Stringargs[]){22.foo(0);23.foo(1);24.25.}26.}Whatisthevalueofthevariableoutputatline23?()
单项选择题 class Super { public Integer getLenght() { return new Integer(4); } } public class Sub extends Super { public Long GetLenght() { return new Long(5); } public static void main(String[] args) { Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght().toString() + “,” + sub.getLenght().toString() ); } } What is the output?()