Java Evaluation Quiz Practice Set - 1

10 Questions | By Hc.csi2014 | Updated: Mar 21, 2022 | Attempts: 310

Questions

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This quiz is conducted as part of the activity based class and its score will be considered for the continuous evaluation of the course "Programming with Java"

Questions and Answers

1.

Which will legally declare, construct, and initialize an array?
- A.
  
  Int [] myList = {"1", "2", "3"};
- B.
  
  Int [] myList = (5, 8, 2);
- C.
  
  Int myList [] [] = {4,9,7,0};
- D.
  
  Int myList [] = {4, 3, 7};
2.

Which is a valid keyword in java?
- A.
  
  Interface
- B.
  
  String
- C.
  
  Float
- D.
  
  Unsigned
3.

What will be the output of the program?public class Foo{ public static void main(String[] args) { try { return; } finally { System.out.println( "Finally" ); } }}
- A.
  
  Finally
- B.
  
  Compilation fails.
- C.
  
  The code runs with no output.
- D.
  
  An exception is thrown at runtime.
4.

What will be the output of the program?public class MyProgram{ public static void main(String args[]) { try { System.out.print("Hello world "); } finally { System.out.println("Finally executing "); } }}
- A.
  
  Nothing. The program will not compile because no exceptions are specified.
- B.
  
  Nothing. The program will not compile because no catch clauses are specified.
- C.
  
  Hello world.
- D.
  
  Hello world Finally executing
5.

What is the value of "d" after this line of code has been executed?double d = Math.round ( 2.5 + Math.random() );
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  2.5
6.

Public class Myfile{ public static void main (String[] args) { String biz = args[1]; String baz = args[2]; String rip = args[3]; System.out.println("Arg is " + rip); }}
- A.
  
  Java Myfile 222
- B.
  
  Java Myfile 1 2 2 3 4
- C.
  
  Java Myfile 1 3 2 2
- D.
  
  Java Myfile 0 1 2 3
7.

Which one is a valid declaration of a boolean?
- A.
  
  Boolean b1 = 0;
- B.
  
  Boolean b2 = 'false';
- C.
  
  Boolean b3 = false;
- D.
  
  Boolean b4 = Boolean.false();
- E.
  
  Boolean b5 = no;
8.

Which is a valid declarations of a String?
- A.
  
  String s1 = null;
- B.
  
  String s2 = 'null';
- C.
  
  String s3 = (String) 'abc';
- D.
  
  String s4 = (String) '\ufeed';
9.
Public interface Foo{ int k = 4; /* Line 3 */}Which three piece of codes are equivalent to line 3?
1. final int k = 4;
2. public int k = 4;
3. static int k = 4;
4. abstract int k = 4;
5. volatile int k = 4;
6. protected int k = 4;
- A.
  
  1, 2 and 3
- B.
  
  2, 3 and 4
- C.
  
  3, 4 and 5
- D.
  
  4, 5 and 6
10.

Public class Test { }What is the prototype of the default constructor?
- A.
  
  Test( )
- B.
  
  Test(void)
- C.
  
  Public Test( )
- D.
  
  Public Test(void)