Q73 Which of the following are valid double literals?4 Q0 _. o, w$ D6 i% o7 {
A 1D
- v( r$ [! M A; c Z B eE-5D/ w% |( U# c- u/ T9 F& _: x5 P( [
C e2d) f+ g/ i! o; O6 n5 y) u0 y( Y" l, j5 r
D 1ed
9 A( B, i& U) t! |- ^1 M Q74 How can you force an object to be garbage collected?
4 z, Z0 |! a7 r4 k1 Z A Invoke its finalized() method# }( e) a9 y$ O* U {* K. r5 j9 d
B Remove all references to the object.
& `7 o$ |8 D5 L2 v7 F+ K C Use all memory that is available to the program.. v9 c* e' `8 `' y; O8 j
D You cannot force an object to be garbage collected.2 G7 W. R, D2 ~, t1 B
Q75 Which of the following are true?
3 Z/ B- M3 ?) ]! S$ _/ l A TextComponent extends TextArea
& M6 U: ] y* Z. G* o6 K B TextArea extend TextField, ]8 b6 B7 n. ?& V/ H3 q/ Q% R
C TextField extends TextComponent, d+ ^! _/ |- l
D TextComponent extends TextField" \1 v, k; G' q, c4 Z6 p
E TextArea extends TextComponent.+ P+ b$ V1 \; k# h; K* h# u' W
Q073 AB
3 @; O( {' M4 O8 }" T* G9 J1 Z Q074 D
" u4 A9 c. z% B P Q075 CE |
发表于 2012-8-4 12:33:16
