Java Mock Quiz Excellence

10 Questions | By Mastermind420420 | Last updated: Mar 19, 2022 | Total Attempts: 311

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Java skills test

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1.

Which of the following process converts Java programming language code to a set of bytecodes?
- A.
  
  Bytecode verification
- B.
  
  Compilation
- C.
  
  Class loading
- D.
  
  Execution
2.

Which of the following values is a type of the boolean data type?
- A.
  
  'true'
- B.
  
  "true"
- C.
  
  True
- D.
  
  Boolean
3.

Your program needs to use the App class present in the foo.bar package. Which of the following statements imports the class to your program?
- A.
  
  Import App;
- B.
  
  Imports foo.bar.App;
- C.
  
  Import foo.bar.*;
- D.
  
  Import foo.*;
4.

Consider the following statements: Statement A: String is a primitive data type to represent a sequence of characters. Statement B: You can declare a String variable as: String str="I am a String"; Select the correct option for the preceding statements:
- A.
  
  Stetement A is true while Statement B is false.
- B.
  
  Both Statement A and Statement B are true.
- C.
  
  Statement A is false while Statement B is true.
- D.
  
  Both Statement A and Statement B are false.
5.

Consider the following statements: Statement A: A constructor must have the same name as that of the class. Statement B: The return type of a constructor must be void. Select the correct option for the preceding statements:
- A.
  
  Both Statement A and Statement B are true.
- B.
  
  Both Statement A and Statement B are false.
- C.
  
  Statement A is true while Statement B is false.
- D.
  
  Statement A is false while Statement B is true.
6.

Select the correct integer length for the int data type.
- A.
  
  8 bits
- B.
  
  16 bits
- C.
  
  32 bits
- D.
  
  64 bits
7.

Which of the following is a valid Java identifier?
- A.
  
  $const
- B.
  
  Const
- C.
  
  Long
- D.
  
  new
8.

The _____________ option of the compiler enables you to compile class files to a different directory than that of the source files.
- A.
  
  -cp
- B.
  
  -source
- C.
  
  -g
- D.
  
  -d
9.

Select the correct option that shows the command to execute the MyApp Java class.
- A.
  
  Java class=MyApp
- B.
  
  Javac MyApp.java
- C.
  
  Java MyApp.java
- D.
  
  Java MyApp
10.

To compile and execute Java programs, you need to set the PATH environment variable to ___________________.
- A.
  
  The working directory that contains the source files of the program.
- B.
  
  The java_root/lib directory, where java_root is the installation directory of the Java technology software.
- C.
  
  The java_root/bin directory, where java_root is the installation directory of the Java technology software.
- D.
  
  The installation directory of the Java technology software.