JAVA P8 Test Quiz

This article presents JAVA P8 Test Quiz in a clear, structured format. It helps readers review key concepts, test their understanding, and learn from the material.

Understanding JAVA P8 Test Quiz

• Question 1. What does the if CONDITION command {Block command} work?
  • If CONDITION is correct then execute the Block command, if it is wrong, skip it.
  • If the CONDITION is wrong, then execute the Block command, if it is correct then skip it.
  • All is wrong
• Question 2. If CONDITION order {Block command 1} else {Block command 2} does it work?
  • If CONDITION is correct, execute Block 1, if wrong, execute Block 2.
  • If CONDITION is wrong, execute Block 1, if it is correct, execute Block 2.
  • If CONDITION is wrong, execute Block 1, if it is correct, skip.
  • If CONDITION is correct then execute Block 2, if it is wrong, skip.
• Question 3. The following message variable results in:

  String expletive = 'Expletive';
  
  String PG13 = 'deleted';
  
  String message = expletive.substring (1,3) + PG13;

  • xpl b? xóa
  • Exp edeleted
  • ple b? xóa
  • xpldeleted
• Question 4. The following statement prints the result:

  int age = 13;
  
  String message = 'PG' + age;

  • PG13
  • PG 13
  • PG age
  • PGage
• Question 5. To check whether the two strings are equal, which method?
  • string1 == string2
  • string1 = string2
  • string1.equals (string2)
  • string1.equal (string2)
• Question 6. What does charAt (n) command do?
  • Search for the nth character
  • Returns the n-1 second character
  • Returns the nth character
  • Returns the character with the index position n.
• Question 7. What is the result of the following command?

  String greetings = 'Hello';
  
  char letter = greetings.charAt (0);

  • HOUR
  • e
  • first
  • o
• Question 8. What is the following block of output with a = 5, b = 8?

  double a, b;
  
  if (a == 0)
  
  if (b! = 0) System.out.println ('Suspicious Phuong Trinh');
  
  else System.out.println ('Phuong Trinh is suspicious');
  
  else System.out.println (-b/a);

  • The perfect virgin
  • Phuong virgin has a thought
  • -1.6
  • Compilation error
• Question 9. What is the following block of output with a = 0, b = 0?

  double a, b;
  
  if (a == 0)
  
  if (b! = 0) System.out.println ('Suspicious Phuong Trinh');
  
  else System.out.println ('Phuong Trinh is suspicious');
  
  else System.out.println (-b/a);

  • The perfect virgin
  • Phuong virgin has a thought
  • -1.6
  • Compilation error
• Question 10. What does the following block do?

  double a, b;
  
  if (a == 0)
  
  if (b! = 0) System.out.println ('Suspicious Phuong Trinh');
  
  else System.out.println ('Phuong Trinh is suspicious');
  
  else System.out.println (-b/a);

  • Solve the first order equation
  • Solve quadratic equations
  • Solve the first order system
  • Solve quadratic equation system