多项选择题
A. Java.util.Map
B. Java.util.Set
C. Java.util.List
D. Java.util.StoredSet
E. Java.util.StoredMap
F. Java.util.Collection
单项选择题 switch (i) { default: System.out.printIn(“Hello”); } What is the acceptable type for the variable i?()
多项选择题 1. int I=1, j=0 2. 3. switch(i) { 4. case 2: 5. j+=6; 6. 7. case 4: 8. j+=1; 9. 10. default: 11. j +=2; 12. 13. case 0: 14. j +=4; 15. } 16. What is the value of j at line 16?()
单项选择题 public class WhileFoo { public static void main (String []args) { int x= 1, y = 6; while (y--) {x--;} system.out.printIn(“x=” + x “y =” + y); } } What is the result?()