programming languages Online Quiz - 203 Online Test

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programming languages Online Quiz - 203

Description: programming languages Online Quiz - 203
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

Given: 1. class Ring { 2. final static int x2 = 7; 3. final static Integer x4 = 8; 4. public static void main(String[] args) { 5. Integer x1 = 5; 6. String s = "a"; 7. if(xl < 9) s += "b"; 8. switch(x1) { 9. case 5: s += "c"; 10. case x2: s += "d"; 11. case x4: s += "e"; 12. } 13. System.out.println(s); 14. } 15. } What is the result?

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abc
abcde
Compilation fails due only to an error on line 7.
Compilation fails due only to an error on line 8.
Compilation fails due only to an error on line 10.
Compilation fails due only to an error on line 11.

System.out.format("Pi is approximately %d.", Math.PI); What is the result?

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Compilation fails
Pi is approximately 3
Pi is approximately 3.141593
An exception is thrown at runtime

Which two statements are true about has-a and is-a relationships? (Choose two.)

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Inheritance represents an is-a relationship
. Inheritance represents a has-a relationship
Interfaces must be used when creating a has-a relationship
Instance variables can be used when creating a has-a relationship

public static void test(String str) { if (str == null | str.length() == 0) { System.out.println("String is empty"); } else { System.out.println("String is not empty"); } } And the invocation: test(null); What is the result?

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An exception is thrown at runtime.
"String is empty" is printed to output
Compilation fails
"String is not empty" is printed to output.

public class TestOne { public static void main (String[] args) throws Exception { Thread.sleep(3000); System.out.println("sleep"); } } What is the result?

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Compilation fails.
An exception is thrown at runtime.
The code executes normally and prints "sleep".
The code executes normally, but nothing is print ed.

It is recommended to overload run() in your Thread class

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True
False

1 String #name = "Jane Doe"; 2 int $age = 24; 3 Double _height = 123.5; 4 double ~temp = 37.5; Which two statements are true?

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. Line 1 will not compile
. Line 2 will not compile
. Line 3 will not compile
. Line 4 will not compile

The primary key on table EMP is the EMPNO column. Which of the following statements will not use the associated index on EMPNO?

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select * from EMP where nvl(EMPNO, '00000') = '59384';
select * from EMP where EMPNO = '59384';
select EMPNO, LASTNAME from EMP where EMPNO = '59384';
select 1 from EMP where EMPNO = '59834';

Assuming today is Monday, 10 July 2000, what is returned by this statement: SELECT to_char(NEXT_DAY(sysdate, 'MONDAY'), 'DD-MON-RR') FROM dual;

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03-JUL-00
10-JUL-00
11-JUL-00
17-JUL-00

How many columns are presented after executing this query: SELECT address1||','||address2||','||address2 "Adress" FROM employee;

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0
1
3
2

Which character function can be used to return a specified portion of a character string?

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INSTR
SUBSTRING
SUBSTR
POS

Which character is used to continue a statement in SQL*Plus?

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*
/
-
--

This Contains all of the classes for creating user interfaces and for painting graphics and images

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java.lang
java.util
java.awt
java.graphics

What does API stand for?

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Assignment Programming Interface
Application Programming Interface
Active Program Interface
None of the above

Which API provides classes that are fundamental to the design of the Java programming language?

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Java.lang
Java.nio
Java.rmi
Java.basic

java.sql API is used for accessing and processing data stored in a data source (usually a relational database) using the Java programming language

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True
False

Which of the following is not a Java API?

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java.nio
java.text
java.xml
java.io

Which of the following APIs provides the classes and interfaces for the security framework?

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java.io
java.rmi
java.security
None of the above

COBOL stands for:

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Combined Business-Oriented Language
Combined Business-OnLine Language
Common Business-Oriented Language
Common Business online Language

These element according to COBOL programming standard need not to be vertically aligned:

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PICTURE clauses
VALUE clauses
'TO' in the statements
All COBOL verbs

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