Home⇒ Computer Engineering⇒ Java concepts and its programming
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Java is a ........... language. strogly typed [other wrong options] [Discuss in forum] |
| Q2 ⇒ Automatic type conversion in Java takes place when Two type are compatible and size of destination type is larger than source type. [other wrong options] [Discuss in forum] |
| Q3 ⇒ Which class cannot be subclassed (or extended) in java? Final class [other wrong options] [Discuss in forum] |
| Q4 ⇒ Which statement is static and synchronized in JDBC API getConnection() [other wrong options] [Discuss in forum] |
| Q5 ⇒ All collection classes are available in java.util package [other wrong options] [Discuss in forum] |
| Q6 ⇒ Inheritance means Sub class extends super class [other wrong options] [Discuss in forum] |
| Q7 ⇒ Size of float and double in Java is 32 and 64 [other wrong options] [Discuss in forum] |
| Q8 ⇒ Java intermediate code is known as Byte code [other wrong options] [Discuss in forum] |
| Q9 ⇒ What will be output of following program? public class Test{public static void main(String[] args){byte b=127; b++; b++; System.out.println(b); } } -127 [other wrong options] [Discuss in forum] |
| Q10 ⇒ What is jdb java debugger [other wrong options] [Discuss in forum] |
| Q11 ⇒ Program which executes applet is known as applet engine [other wrong options] [Discuss in forum] |
| Q12 ⇒ In which we clone the object and their constituent parts Deep cloning [other wrong options] [Discuss in forum] |
| Q13 ⇒ How many primitive data types are there in Java? 8 [other wrong options] [Discuss in forum] |
| Q14 ⇒ Object which can store group of other objects is called Collection object [other wrong options] [Discuss in forum] |
| Q15 ⇒ How many keywords are available in java 48 [other wrong options] [Discuss in forum] |
| Q16 ⇒ Which of the following automatic type conversion will be possible? int to long [other wrong options] [Discuss in forum] |
| Q17 ⇒ Methods that have same name, but different Parameter list and different definition known as Overloading [other wrong options] [Discuss in forum] |
| Q18 ⇒ Choose the correct statement : Restriction on static methods are- All of the above [other wrong options] [Discuss in forum] |
| Q19 ⇒ Why we use array as a parameter of main method Can store multiple values [other wrong options] [Discuss in forum] |
| Q20 ⇒ Which is the predefined package Lang package [other wrong options] [Discuss in forum] |
| Or |