File - Discussion Page For Q.2684 | Java Programming Questions and Answers | Java Programming Free Online-Tests | LucentBlackBoard

Home > Java Programming > File > Questions and Answers

You have a class file name Test.class inside javaproject directory.
Test.java source code is :
import java.util.Properties;
class Test {
public static void main (String[] args){
Properties p = System.getProperties();
System.out.println(p.getProperty("key1"));
}
}
you have issued below commands from command prompt.
cd javaproject
java -D key1=value1 Test
What is the output ?

A.	value1	B.	null
C.	Run successfully but no output	D.	Run fails - java.lang.NoClassDefFoundError: key1=value1

Answer and Explanation

Answer:Run fails - java.lang.NoClassDefFoundError: key1=value1

Explanation:
-D option , name=value pair must follow immediately, no spaces allowed. In this case
there is space between -D and key1=value1 So java.lang.NoClassDefFoundError:
key1=value1.

Comment on this Question
Name:

LucentBlackBoard.com has the web's largest collection of over 15,000 aptitude questions and answers with detailed explanation which include subjects like Arithmetic Aptitude, Logical Reasoning, Verbal Ability, General Knowledge, Programming Skills and more!

Our online education portal provides a unique and standard learning experience for students. We enable the students to prepare for most of the entrance and competitive exams like MBA (MAT, GMAT), Engineering (IIT-JEE, AIEEE, GATE), Employment (IAS, Bank PO, Railway, UGCNET), Civil Services and many more. We bring you the best in education by providing technical excellence and creating innovative solutions. We provide facility for online test preparation that offers 24/7 access to relevant subject matter and relative tests. These test preparations help the students to groom themselves and get prepared before actually facing the examination.