单项选择题
A. closing the stream
B. flushing the stream
C. writing to the stream
D. marking a location in the stream
E. writing a line separator to the stream
多项选择题 10. class MakeFile { 11. public static void main(String[] args) { 12. try { 13. File directory = new File(”d”); 14. File file = new File(directory,”f”); 15. if(!file.exists()) { 16. file.createNewFile(); 17. } 18. } catch (IOException e) { 19. e.printStackTrace 20. } 21. } 22. } The current directory does NOT contain a directory named “d.” Which three are true?()
单项选择题 public class Wow { public static void go(short n) {System.out.println(”short”); } public static void go(Short n) {System.out.println(”SHORT”);} public static void go(Long n) {System.out.println(” LONG”); } public static void main(String [] args) { Short y= 6; int z=7; go(y); go(z); } } What is the result?()
单项选择题 public class Yikes { public static void go(Long n) {System.out.println(”Long “);} public static void go(Short n) {System.out.println(”Short “);} public static void go(int n) {System.out.println(”int “);} public static void main(String [] args) { short y= 6; long z= 7; go(y); go(z); } } What is the result?()