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Which one of the following is not a Java feature?
Dynamic and Extensible
Which of these statement is incorrect?
Every class must contain a main() method
Static members are not inherited to subclass.
False
Which of these cannot be used for a variable name in Java?
keyword
1. What is the implicit return type of constructor?
No return type
Which of the following is not an OOPS concept in Java?
Compilation
1. Exception created by try block is caught in which block
Catch
What would be behaviour if the constructor has a return type?
Compilation error
Identify the infinite loop.
For(;;)
From where break statement causes an exit?
From innermost loops or switches
Which of the following is used with the switch statement?
break
Which of the following is not a decision making statement?
do-while
Which of the following is not a valid flow control statement?
exit()
Which of the following is used for implementing inheritance through an interface?
implements
Which of these selection statements test only for equality?
switch
Which of these have highest precedence?
()
What is the extension of compiled java classes?
.class
What is the extension of java code files?
.java
Which of this statement is incorrect?
All object of a class are allotted memory for the methods defined in the class
1. Which of the following exception is thrown when divided by zero statement is executed?
ArithmeticException
Which of the following is a valid declaration of an object of class Box?
Box obj = new Box();
What is true about a break?
Break halts the execution and forces the control out of the loop
What is not the use of "this" keyword in Java?
Calling another constructor in constructor chaining
1. Identify the interface which is used to declare core methods in java?
Collection
What would be the result if a class extends two interfaces and both have a method with same name and signature? Lets assume that the class is not implementing that method.
Compile time error
What is false about constructor?
Constructor can have a return type
Which of these statements are incorrect?
Division operator, /, has higher precedence than multiplication operator
What is not type of inheritance?
Double inheritance
Abstract class cannot have a constructor.
False
What is the process of defining more than one method in a class differentiated by method signature?
Function overloading
1. What is the variables declared in a class for the use of all methods of the class called?
Instance variable
Using which of the following, multiple inheritance in Java can be implemented?
Interfaces
1. Which of the following statements are true about finalize() method?
It can be called Zero or one times
What is true about constructor?
It can take any number of parameters
Which environment variable is used to set the java path?
JAVA_HOME
Which component is used to compile, debug and execute java program?
JDK
Which component is responsible to run java program?
JRE
Which component is responsible for converting bytecode into machine specific code?
JVM
Which component is used to compile, debug and execute the java programs?
JVM
Which statement is true about Java?
Java is a platform-independent programming language
Which of the following is a superclass of every class in Java?
Object class
Which exception is thrown when java is out of memory?
OutOfMemoryError
Which statement is true about java?
Platform independent programming language
In order to restrict a variable of a class from inheriting to subclass, how variable
Private
What is true about private constructor?
Private constructor ensures only one instance of a class exist at any point of time
What is true about protected constructor?
Protected constructor can be instantiated even if child is in a different package
1. Identify the prototype of the default constructor. Public class Solution {}
Public Solution()
Which of the following statements is correct?
Public method is accessible to all other classes in the hierarchy
When does Exceptions in Java arises in code sequence?
Run Time
1. Where does the system stores parameters and local variables whenever a method is invoked?
Stack
1. Identify the modifier which cannot be used for constructor.
Static
Does Java support multiple level inheritance?
True
The while loop repeats a set of code while the condition is not met?
True
Which one of the following is not an access modifier?
Void
Which of these keywords must be used to handle the exception thrown by try block in some rational manner?
catch
Which of these keywords is used to make a class?
class
Which of these is correct way of inheriting class A by class B?
class B extends A {}
What would be the behaviour if this() and super() used in a method?
compile time error
Which of the following is a method having same name as that of it's class?
constructor
Which of these jump statements can skip processing the remainder of the code in its body for a particular iteration?
continue
What is true about do statement?
do statement executes the code of a loop at least once
Which of the following loops will execute the body of loop even when condition controlling the loop is initially false?
do-while
Which of the following is used for implementing inheritance through class?
extends
Which of this keyword must be used to inherit a class?
extends
Which of the following is not a valid jump statement?
goto
Which of these are selection statements in Java?
if()
Which of these keywords is used to define interfaces in Java?
interface
All classes in Java are inherited from which class?
java.lang.Object
1. Where is System class defined?
java.lang.package
Which method can be defined only once in a program?
main method
A class member declared protected becomes a member of subclass of which type?
private member
If super class and subclass have same variable name, which keyword should be used to use super class?
super
Which of these keywords is used to manually throw an exception?
throw
Which of these keywords is not a part of exception handling?
thrown
Which of these keywords are used for the block to be examined for exceptions?
try
Which of these keywords must be used to monitor for exceptions?
try
Which of this statement is incorrect?
two case constants in the same switch can have identical values
What is the return type of a method that does not return any value?
void
