現(xiàn)有如下五個(gè)聲明: int a_really_really_really_long_variable_name = 5; int _hi =6; int big = Integer.getInteger("7"); int $dollars = 8; int %percent = 9; 有幾個(gè)可以通過編譯?()
A.1 B.2 C.3 D.4
5. class Passer3 { 6. final static Passer3 p2 = new Passer3(); 7. public static void main(String [] args) { 8. Passer3 p4 = p2.go(p2); 9. Passer3 p3 = p2; 10. System.out.print(p3==p4); 11. } 12. Passer3 go(Passer3 p) { 13. p = new Passer3(); 14. return p; 15. } 16. } 結(jié)果為:()
A.true B.false C.第 8 行出現(xiàn)一個(gè)錯(cuò)誤,編譯失敗 D.第 9 行出現(xiàn)一個(gè)錯(cuò)誤,編譯失敗
class Flibitz { public static void main(String [] args) { int grop = 7; new Flibitz().go(grop); System.out.print(grop); } void go(int grop) { if(++grop 〉 7) grop++; System.out.print(grop); } } 結(jié)果為:()
A.77 B.79 C.97 D.99