java mcqs with answers for placement| freshers | objective type| English|Java programming tutorial

In this tutorial video, I have discussed following 17 + 3 bonus MCQ or multiple choice questions which are very important for examination, interviews, entrance test, online quiz, programming
competition etc. I have discussed following multiple choice questions and explained how the answers are selected. This java mcq questions and answers for freshers are really important for placement, interview, exam etc. These are also called java objective type questions and answers. I am sure they would help students to gain confidence in the placement, interview, exam etc.

Following are the time stamps if you want to go for particular question and answer directly.
00:43 - Q1 Which component is used to compile, debug and execute java program?
explained JVM, JDK, JRE and JIT
03:38 Q2 -Which component is responsible for converting bytecode into machine specific code?
03:51 Q3 -Which component is responsible to run java program?
JRE and JDK difference
04:50 Q4- Which of the below is invalid identifier with the main method?
explained Public static void main
05:32 Q5- What is the extension of java bytecode file/compiled java classes?
06:08 Q6- What is use of interpreter?
07:21 Q7 -Which of the following is a type of polymorphism in Java?
discussed static and dynamic polymorphism in java
08:58 Q8- When does method overloading is determined?
09:40 Q9- Which concept of Java is a way of converting real world objects in terms of class?
discussed four properties of OOP
13:31 Q10 -Which concept of Java is achieved by combining methods and attribute into a class?
14:01 Q11 -When does method overriding is determined?
14:41 Q12-What is the stored in the object obj in following lines of Java code? Discussed concept of reference and object in java.
16:56 Q13 Which of the following is a valid declaration of an object of class Box?
17:33 Q14. Which of these operators is used to allocate memory for an object?
use of new keyword
18:10 Q15. Which of these statement is incorrect? Discussed rules of making classes and main methods. Discussed main method and Applet programs.
20:16 Q16- What is the output of following: Discussion and program regarding what will be printed if an object is being printed. It calls toString method in java.
22:01 Q17 - What is the output of following: Discussion and program regarding use of integer in for loop. Java treats integer and Boolean differently as compared to c programming. Java error cannot convert from integer to boolean
24:31 Q18-What is the output of following: Calling a non static method from main method will give you error. Error would be regarding - Cannot make a static reference to a non-static method
26:01 Q19-What is the output of following. The corrected version of question 18.
26:31 Q20-What is the output of following.: Discussed how object are created. How variable values are printed with integer. How concatenation takes place in System.out.println