About Question enthuware.ocajp.i.v7.2.1037 :
Posted: Fri Jan 20, 2017 8:54 am
about answer D, how it's legal?
Which of these statements are legal?
variable o3 might not have been initialized
Code: Select all
interface I1 { }
interface I2 { }
class C1 implements I1 { }
class C2 implements I2 { }
class C3 extends C1 implements I2 { }
C1 o1;
C2 o2;
C3 o3;- Select 3 options
A. class C4 extends C3 implements I1, I2 { }
B. o3 = o1;
C. o3 = o2;
D. I1 i1 = o3; I2 i2 = (I2) i1;
E. I1 b = o3;