Java Skill Assessment Test
This test will measure the applicants knowledge and competency in the technical field of Java development and programming
- 1.What is the size of a Char?
- A.
4 bits
- B.
7 bits
- C.
8 bits
- D.
16 bits
- 2.A class cannot be declared
- A.
Static
- B.
Private
- C.
Default
- 3.Following code will result in: int a = 3.5;
- A.
Compilation error
- B.
Runtime error
- C.
A being 3.5
- D.
A being 3
- 4.Following code will result in: int a1 = 5; double a2 = (float)a1;
- A.
Compilation error
- B.
Runtime error
- C.
No errors
- 5.Following code will result in: int a = 9/0;
- A.
Compilation error: Divisions must be in a try block
- B.
Compilation error: DivideByZeroException
- C.
Runtime Exception
- D.
No Error: a is NaN
- 6.Following code will result in: float a = 9/0;
- A.
Compilation error: Divisions must be in a try block
- B.
Compilation error: DivideByZeroException
- C.
Runtime Exception
- D.
No Error: a is NaN
- 7.A class can be transient
- A.
True
- B.
False
- 8.Following code will result in: class A { int b = 1; public static void main(String [] args) { System.out.println("b is " + b); }}
- A.
Compilation error
- B.
Runtime Error
- C.
Runtime Exception
- D.
Output of b is 1
- 9.Following code will result in: class A { public static void main(String [] args) {B b = new A(); }} class B extends A {}
- A.
Compile error
- B.
Runtime Exception
- C.
No error
- 10.Following code will result in: class A { public static void main(String [] args) {A a = new B(); }} class B extends A {}
- A.
Compiler error
- B.
Runtime Exception
- C.
No errors
- 11.Methods that are marked protected can be called in any subclass of that class.
- A.
True
- B.
False
- 12.An abstract class can have non-abstract methods.
- A.
True
- B.
False
- 13.Java keywords are written in lowercase as well as uppercase
- A.
True
- B.
False
- 14.What is an instanceof
- A.
A methods in object
- B.
An operator and keyword
- 15.Primitive datatypes are allocated on a stack.
- A.
True
- B.
False
- 16.Can you compare a boolean to an integer?
- A.
Yes
- B.
No
- 17.Integer a = new Integer(2); Integer b = new Integer(2); What happens when you do if (a==b)?
- A.
Compiler error
- B.
Runtime Exception
- C.
True
- D.
False
- 18.Synchronized is a keyword to tell a Thread to grab an Object lock before continuing execution.
- A.
True
- B.
False
- 19.The default statement of a switch is always executed
- A.
By marking it private
- B.
By marking it volatile
- C.
By marking it transient
- D.
You can not.
- 20.Which one does not extend java.lang.Number
- A.
Integer
- B.
Boolean
- C.
Character
- D.
Long
- E.
Short
- 21.What is default layout manager for panels and applets?
- A.
Flowlayout
- B.
Gridlayout
- C.
BorderLayout
- 22.Which of the following statements are true?
- A.
When you construct an instance of File, if you do not use the filenaming semantics of the local machine, the constructor will throw an IOException.
- B.
When you construct an instance of File, if the corresponding file does not exist on the local file system, one will be created.
- C.
When an instance of File is garbage collected, the corresponding file on the local file system is deleted.
- D.
None of the above
- 23.You execute the code below in an empty directory. What is the result? File f1 = new File("dirname"); File f2 = new File(f1, "filename");
- A.
A new directory called dirname is created in the current working directory
- B.
A new directory called dirname is created in the current working directory. A new file called filename is created in directory dirname
- C.
A new directory called dirname and a new file called filename are created, both in the current working directory
- D.
A new file called filename is created in the current working directory
- E.
No directory is created, and no file is created
Questions: 59 | Attempts: 6063 | Last updated: Mar 21, 2022
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Sample QuestionIf none of the private/protected/public is specified for a member, that member ...
Questions: 25 | Attempts: 620 | Last updated: Mar 19, 2022
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Sample Questionimport myLibrary.*; public class ShowSomeClass { // code for the class... } What is the name of the java file containing this program?
Questions: 38 | Attempts: 3022 | Last updated: May 29, 2022
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Sample QuestionConsider the following code: Line no 1:class Outer{ Line no 2:public static class Inner{ Line no 3:} Line no 4:public static void display(){ } } Line no 5:public class Test Line no 6:{ Line no 7:public static void main(String args[]) Line no 8:{ Line no 9://Replace with code from the option below Line no 10:}} Which of the following option when replaced at line no 9,instantiates an instance of the nested class?
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