Tag: technology

Quizzes (307) Questions (36705)

Questions Related to technology

Multiple choice technology programming languages

What will be output for the following program? public class Boxing2 { public static void main(String[] args) { byte b = 10; method(b); } static void method(int i){ System.out.println("Primitivae Type call"); } static void method(Integer i){ System.out.println("Wrapper Type Call"); } }

  1. Wrapper Type Call

  2. Primitive Type Call

  3. Compiler Error

  4. Compiles fine, throws runtime exception
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

The difference between the DELETE and TRUNCATE SQL clauses is:

  1. The DELETE clause deletes all rows in a database table, while the TRUNCATE clause can have a WHERE condition and might or might not delete all rows in a table.

  2. The TRUNCATE clause is identical to the DELETE clause

  3. The TRUNCATE clause deletes all rows in a database table, while the DELETE clause can have a WHERE condition and might or might not delete all rows in a table.

  4. None fo the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology programming languages

What will be the output of the following program? package wrapper_boxing; public class WrapperTest2 { public static void main(String[] args) { Boolean bool1 = new Boolean(true); Boolean bool2 = new Boolean(false); Boolean bool3 = new Boolean("false"); Boolean bool4 = new Boolean(bool1); System.out.println(bool1.equals(bool4)); System.out.println(bool2 == bool3); System.out.println(bool1 == bool4); } }

  1. The program will not compile because the creation of bool4 object will cause compilation error.

  2. The program will produce the output 'true false false'.

  3. The program will produce the output 'true true true'.

  4. The program will output 'true false true'.
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

What is a trigger?

  1. A trigger is part of data extraction process.

  2. A trigger is a special kind of stored procedures executed when certain event occurs.

  3. A trigger defines relations between tables.

  4. A trigger is a part of error handling
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice technology programming languages

What will be the output of the following program? public class Ques09 { public static void main(String[] args) { Integer a = null; a = new Integer(10); int b = 20; a = b; a = 30; System.out.println(a++); short s = 100; a = s; System.out.println(a--); } }

  1. The program won't compile.

  2. The program will throw a run-time exception.

  3. The program will output '31 100'

  4. The program will output '31 99'
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology programming languages

What will be the output of the following program? import java.io.ByteArrayInputStream; import java.io.InputStream; public class Ques04 { public static void main(String[] args) throws Exception{ byte buffer[] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'}; InputStream inputStream = new ByteArrayInputStream(buffer); inputStream.read();inputStream.read(); inputStream.skip(4); System.out.println((char)inputStream.read()); } }

  1. The program will raise a run-time exception telling that it is not possible to skip bytes in the middle of a reading operation.

  2. The program will output 'd'.

  3. The program will output 'e'.

  4. The program will output 'g'.
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation