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Test on JAVA P10 test

  1. 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
  2. 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
  3. Question 3. Given str = 'Yunlin university', what is the result of str.lastIndexOf ('sti')?
    1. 4
    2. 14
    3. false
    4. -first
  4. Question 4. After running the command block s =?
     int s = 0; 

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

     s + = i;
    1. 42
    2. 55
    3. 9
    4. 29
  5. Question 5. After running the command block s =?
     for (int i = 0; i <= 10; i ++) { 

     int s = 0; 

     s + = i;} 

     System.out.print (s);
    1. 0
    2. 55
    3. 45
    4. Wrong command
  6. Question 6. After running the command block s =?
     int s = 0; 

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

     s + = i;
    1. 45
    2. 55
    3. 56
    4. 0
  7. 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]); }
    1. -g
    2. cruel
    3. world
    4. -g cruel world
  8. 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]); }
    1. -g cruel world
    2. cruel world
    3. Goodbye, cruel world
    4. Goodbye cruel world
  9. 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
  10. 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
3.2 ★ | 5 Vote
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