Test on JAVA P10 Test

This article presents Test on JAVA P10 Test in a clear, structured format. It helps readers review key concepts, test their understanding, and learn from the material.

Understanding Test on JAVA P10 Test

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

  int s = 0;
  
  for (int i = 3; i <10; i ++)
  
  s + = i;

  • 42
  • 55
  • 9
  • 29
• 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;

  • 45
  • 55
  • 56
  • 0
• 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 ++;
  
  }
  
  }

  • 0
  • first
  • 2
  • Void
• Question 10. If initializing two class A objects, the KiemTra and class B extends KiemTra, the id of object B is valid?

  class KiemTra {
  
  private int i;
  
  private int nextId;
  
  public void setId () {
  
  id = nextId;
  
  nextId ++;
  
  }
  
  }

  • 0
  • first
  • 3
  • Void