单项选择题
A. AC
B. BD
C. ACD
D. ABCD
E. Compilation fails.
单项选择题 int i = 1,j = -1; switch (i) { case 0, 1:j = 1; case 2: j = 2; default; j = 0; } System.out.println(“j=”+j); What is the result?()
单项选择题 class Base { Base() { System.out.print(“Base”); } } public class Alpha extends Base { public static void main( String[] args ) { new Alpha(); new Base(); } } What is the result?()
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?()