A. int[]arr={11,21,31};for(intx:arr)System.out.println(x);
B. Object[]obj=newString[]{"111","2222","3333"};String[]str=(String[])obj;
C. Object[]obj={"111","2222","3333"};String[]str=(String[])obj;
D. Object[]arr=newFloat[]{11.1F,22.1F,33.3F,44.44F,55.55F};for(Floatx:(Float[])arr)System.out.println(x);