Test on JAVA P10 test

Question 1. Given str = 'Yunlin university', what is the result of str.lastIndexOf ('i')?
1. 4
2. 14
3. 7
4. There is no right answer
Question 2. Given str = 'Yunlin university', what is the result of str.lastIndexOf ('i', 7) returning results?
1. 4
2. 14
3. 7
4. -first
Question 3. Given str = 'Yunlin university', what is the result of str.lastIndexOf ('sti')?
1. 4
2. 14
3. false
4. -first

Question 4. After running the command block s =?

 int s = 0; 

 for (int i = 3; i <10; i ++) 

 s + = i;

Question 5. After running the command block s =?

 for (int i = 0; i <= 10; i ++) { 

 int s = 0; 

 s + = i;} 

 System.out.print (s);

0
55
45
Wrong command

Question 6. After running the command block s =?

 int s = 0; 

 for (int i = 0; i <= 10; i ++) 

 s + = i;

Question 7. If the program runs with the java message -g cruel world command, what is the value of the args [1] parameter?

 public static void main (String [] args) { 

 if (args [0] .equals ('- g')) 

 System.out.print ('Goodbye,'); 

 for (int i = 1; i 
 System.out.print ('' + args [i]); }

-g
cruel
world
-g cruel world

Question 8. If the program runs with the java message -g cruel world, what is the result?

 public static void main (String [] args) { 

 if (args [0] .equals ('- g')) 

 System.out.print ('Goodbye,'); 

 for (int i = 1; i 
 System.out.print ('' + args [i]); }

-g cruel world
cruel world
Goodbye, cruel world
Goodbye cruel world

Question 9. If initializing two class A objects extending KiemTra and class B extends KiemTra, the id of object A is valid:
```
 class KiemTra { 

 private int i; 

 private int nextId; 

 public void setId () { 

 id = nextId; 

 nextId ++; 

 } 

 } 
```
1. 0
2. first
3. 2
4. Void
Question 10. If initializing two class A objects, the KiemTra and class B extends extends KiemTra, the id of object B is valid?
```
 class KiemTra { 

 private int i; 

 private int nextId; 

 public void setId () { 

 id = nextId; 

 nextId ++; 

 } 

 } 
```
1. 0
2. first
3. 3
4. Void