R4RIN – MCQs, Mock Tests | Java Java Mcq Question Set 4

Which of these keywords must be used to handle the exception thrown by try block in some rational manner?

1. catch
2. throw
3. finally
4. try

✅ Correct Answer: 1

Which of these keywords is used to manually throw an exception?

1. catch
2. try
3. throw
4. finally

✅ Correct Answer: 3

Which of these is a super class of all exceptional type classes?

1. Cachable
2. String
3. RuntimeExceptions
4. Throwable

✅ Correct Answer: 4

Which of these class is related to all the exceptions that can be caught by using catch?

1. Exception
2. Error
3. RuntimeExecption
4. All of the above

✅ Correct Answer: 1

Which of these class is related to all the exceptions that cannot be caught?

1. RuntimeExecption
2. Exception
3. Error
4. All of the above

✅ Correct Answer: 3

Which of these handles the exception when no catch is used?

1. Default handler
2. throw handler
3. Java run time system
4. finally

✅ Correct Answer: 1

Which of these keywords is used to generate an exception explicitly?

1. finally
2. catch
3. throw
4. try

✅ Correct Answer: 3

Which of these class is related to all the exceptions that are explicitly thrown?

1. Exception
2. Error
3. Throw
4. Throwable

✅ Correct Answer: 4

Which of these operator is used to generate an instance of an exception than can be thrown by using throw?

1. thrown
2. new
3. malloc
4. alloc

✅ Correct Answer: 2

Which of these keywords is used to by the calling function to guard against the exception that is thrown by called function?

1. throw
2. try
3. catch
4. throws

✅ Correct Answer: 4

Which of these keywords is used to define interfaces in Java?

1. interface
2. intf
3. Interface
4. Intf

✅ Correct Answer: 1

Which of these can be used to fully abstract a class from its implementation?

1. Objects
2. Packages
3. Interfaces
4. None

✅ Correct Answer: 3

Which of these access specifiers can be used for an interface?

1. private
2. Public
3. Protected
4. All of the above

✅ Correct Answer: 2

Which of these keywords is used by a class to use an interface defined previously?

1. Import
2. implements
3. Implements
4. import

✅ Correct Answer: 2

Which of the following is correct way of implementing an interface salary by class manager?

1. class manager imports salary {}
2. class manager extends salary {}
3. class manager implements salary {}
4. None

✅ Correct Answer: 3

Which of the following is incorrect statement about packages?

1. Interfaces are specified public if they are to be accessed by any code in the program.
2. All variables in interface are implicitly final and static.
3. Interfaces specifies what class must do but not how it does.
4. All variables are static and methods are public if interface is defined pubic.

✅ Correct Answer: 4

Which of the following package stores all the standard java classes?

1. java
2. lang
3. util
4. java.packages

✅ Correct Answer: 1

Which of these classes is not included in java.lang?

1. Integer
2. Array
3. Class
4. Byte

✅ Correct Answer: 2

Which of these is a process of converting a simple data type into a class?

1. type casting
2. type wrapping
3. type conversion
4. None

✅ Correct Answer: 3

Which of these is a super class of wrappers Double & Integer?

1. Number
2. Float
3. Long
4. Digits

✅ Correct Answer: 1