Interview Questions Answers in Core Java

Question { 5731 }

Name the runtime exceptions that occurs frequently?

Answer

ArithmeticException,FileNotFoundException

Is This Answer Correct ?

2 Yes

1 No

Question { 7106 }

Name the types of 'priority'?

Answer

Min_Priority------------1
Max_Priority------------10
Norm-Priority-----------5

Is This Answer Correct ?

7 Yes

3 No

Question { 5998 }

In what ways you can handle exception ?

Answer

using try--catch--finally
using throws

Is This Answer Correct ?

4 Yes

0 No

Question { 3861 }

transaction attributes ?

Answer

not supported,requires,required new,supports,mandatory,never

Is This Answer Correct ?

1 Yes

0 No

Question { 47265 }

What are types of Java applications?

Answer

Standalone applications
Web applications
Mobile applications

Is This Answer Correct ?

42 Yes

15 No

Question { 8151 }

What are virtual functions?

Answer

Functions which are called at runtime are called virtual
functions.

Is This Answer Correct ?

8 Yes

7 No

Question { Samsung, 12594 }

What are wrapped classes?

Answer

Wrapper classes allow primitive data types to be accessed
as object.
One assigned a value the value of wrapper calsses cann't be
changed.
thay are used to convert value of one data type to another.

Is This Answer Correct ?

17 Yes

1 No

Question { 3986 }

What classes of exceptions, caught by a catch clause?

Answer

A catch clause can catch any exception that is assigned to
the throable type.It includes both run time errors and
exceptions.

Is This Answer Correct ?

1 Yes

1 No

Question { Noah Solutions, 20752 }

What are wrapper classes?

Answer

wrapper classes allow primitive data types to be accessed
as objects.Once assigned a value the value of wrapper
classes can't be changed.

Is This Answer Correct ?

48 Yes

10 No

Question { 7335 }

What classes of exceptions, thrown by a throw statement?

Answer

Syntax for throw is:
throw throwableinstance;
Here the throwableinstance must be an object of type
Throwable or sub-class of Throwable.Simple types such as
int or char as well as non-Throwable types such as String
or object can't be assigned to throw.

Is This Answer Correct ?

1 Yes

0 No

Question { 3405 }

What is the specification of ?CODEBASE? in an applet?

Answer

When the applet class file is not in the same directory
codebase is used.

Is This Answer Correct ?

0 Yes

0 No

Question { 5743 }

When you Click a Button, What event will be fired?

Answer

An ActionEvent is generated.

Is This Answer Correct ?

3 Yes

1 No

Question { 7005 }

What error occurs if a try-catch-finally statement sequence
does not have a catch clause?

Answer

no error will occur

Is This Answer Correct ?

4 Yes

2 No

Question { Amazon, 14606 }

What happens if an exception is not caught?

Answer

results in the termination of the program

Is This Answer Correct ?

14 Yes

2 No

Question { 8861 }

What happens when you assigned a 'double' value to
a 'String'?

Answer

result is a string

Is This Answer Correct ?

1 Yes

5 No

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