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Java concepts and its programming

JAR file contains the compressed version of_________________?

September 1, 2021April 18, 2019 by admin
JAR file contains the compressed version of_________________?

A. .java file
B. .jsp file
C. .class file
D. None of above

Categories Java concepts and its programming Leave a comment

x=x+1 is equivalent to _________________?

September 1, 2021April 18, 2019 by admin
x=x+1 is equivalent to _________________?

A. x++
B. ++x
C. x=x-1
D. None of these

Categories Java concepts and its programming Leave a comment

Package of drawstring() method is _________________?

September 1, 2021April 18, 2019 by admin
Package of drawstring() method is _________________?

A. java.awt
B. javax.swing
C. java.applet
D. java.io

Categories Java concepts and its programming Leave a comment

Which of the following below are valid isolation levels in J2EE ?

September 1, 2021April 18, 2019 by admin
Which of the following below are valid isolation levels in J2EE ?

A. TRANSACTION_READ_UNCOMMITTED
B. TRANSACTION_SERIALIZABLE
C. Only A
D. Both A and B

Categories Java concepts and its programming Leave a comment

What will the output of the following program? public class Test{ public static void main(String args[]){float f = (1 / 4) * 10; int i = Math.round(f); System.out.println(i); } } ?

September 1, 2021April 18, 2019 by admin
What will the output of the following program? public class Test{ public static void main(String args[]){float f = (1 / 4) * 10; int i = Math.round(f); System.out.println(i); } } ?

A. 0
B. 1
C. 2
D. 3

Categories Java concepts and its programming Leave a comment

Process of creating exact copy of the existing object is called_______________?

September 1, 2021April 18, 2019 by admin
Process of creating exact copy of the existing object is called_______________?

A. overloading
B. overriding
C. cloning
D. cog

Categories Java concepts and its programming Leave a comment

If method have same name as class name and method don’t have any return type then it is known as______________?

September 1, 2021April 18, 2019 by admin
If method have same name as class name and method don’t have any return type then it is known as______________?

A. Constructor
B. Destructors
C. Variable
D. Object

Categories Java concepts and its programming Leave a comment

Which metrhods are utilized to control the access to an object in multi threaded programming ?

September 1, 2021April 18, 2019 by admin
Which metrhods are utilized to control the access to an object in multi threaded programming ?

A. Synchronized methods
B. Asynchronized methods
C. Serialized methods
D. None of above

Categories Java concepts and its programming Leave a comment

The smallest integer type is _____________ and its size is____________ bits?

September 1, 2021April 18, 2019 by admin
The smallest integer type is _____________ and its size is____________ bits?

A. short, 8
B. byte, 8
C. short, 16
D. short, 16

Categories Java concepts and its programming Leave a comment

Which keyword is used while using interface________________?

September 1, 2021April 18, 2019 by admin
Which keyword is used while using interface________________?

A. throw
B. throws
C. extend
D. implements

Categories Java concepts and its programming Leave a comment
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