A. Singlethreaded
B. Multithreaded
C. Both of above
D. None of above
✅ The correct answer is option B.
Java concepts and its programming MCQs
62. Which of the following command is used to compile the Java program ?
A. java
B. javac
C. javap
D. none of these
✅ The correct answer is option B.
63. What is jdb_________________?
A. java Disassemble
B. java Interpreter
C. java compiler
D. java debugger
✅ The correct answer is option D.
64. Which keyword is used while using interface________________?
A. throw
B. throws
C. extend
D. implements
✅ The correct answer is option D.
65. Main method parameter has which type of data type___________________?
A. int
B. char
C. string
D. double
✅ The correct answer is option C.
66. Why we use array as a parameter of main method_________________?
A. Can store multiple values
B. It is syntax
C. Both of above
D. None of above
✅ The correct answer is option A.
67. How many keywords are available in java ?
A. 24
B. 48
C. 96
D. 192
✅ The correct answer is option B.
68. Which of the following automatic type conversion will be possible ?
A. byte to int
B. short to int
C. long to int
D. int to long
✅ The correct answer is option D.
69. String is the predefined ?
A. Object
B. Variable
C. Class
D. Method
✅ The correct answer is option C.
70. The object is created with “new” keyword ?
A. At Compile-time
B. At run-time
C. Depends on the code
D. None of these
✅ The correct answer is option B.