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Command-line arguments are like superpowers for your Java programs. They allow your creations to spring to life and interact with the outside world, understanding the user’s needs. Imagine building a file encryption tool – command-line arguments would enable you to specify the file to encrypt simply by typing its name after the program itself on the command line.
This is just one example! Whether you’re crafting utilities that process data from specific files or developing applications that require configuration settings based on user preferences, mastering command-line arguments empowers you to create versatile and interactive Java programs.
This engaging quiz will put your understanding of these essential concepts to the test, ensuring you’re well-equipped to leverage this technique and elevate your Java development skills.
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Question 1 of 15
1. Question
Which of the following is used to have command line arguments in the program ?
CorrectIncorrect -
Question 2 of 15
2. Question
class Argument {
public static void main ( String [ ] args )
{
if(args.length==0)
{
System.out.println(“Default argument is passed”);
}
else {
System.out.println(“command line argument is passed”);
}
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 3 of 15
3. Question
class CommandLine {
public static void main ( String args [ ] )
{
System.out.println(argc);
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 4 of 15
4. Question
Which keyword in Java is used to represent the number of command line arguments ?
CorrectIncorrect -
Question 5 of 15
5. Question
class Program {
public static void main ( String args [ ] )
{
if(args.length==argc)
System.out.println(“Length of command line argument length is equal to no of command line arguments);
else {
System.out.println(“Length of command line argument length is not equal to no of command line arguments);
}
}
Command line argument = DataFlair webservices private limited.
What will be the output of the program ?
CorrectIncorrect -
Question 6 of 15
6. Question
class Looping {
public static void main ( String args [ ] )
{
for(i=0; i<=args.length;i++)
{
System.out.println(args[i]);
}
}
Command line argument = DataFlair webservices private limited.
What will be the output of the given program ?
CorrectIncorrect -
Question 7 of 15
7. Question
Which of the following is the thing used to store command line arguments ?
CorrectIncorrect -
Question 8 of 15
8. Question
class Example {
Public static void main ( String args [ ] )
{
System.out.println( argc);
}
}
If the given program is executed with DataFlair as command line argument what will be the output of the program ?
CorrectIncorrect -
Question 9 of 15
9. Question
class Exceptions {
public static void main ( String args [ ] )
{
}
public void display()
{
System.out.println(args);
}
}
What will be the output of the program ?
CorrectIncorrect -
Question 10 of 15
10. Question
Which of the following is not true about command line arguments ?
CorrectIncorrect -
Question 11 of 15
11. Question
class Sample {
public static void main ( String args [ ] )
{
System.out.println(args+args.length);
}
}
If the above program is executed with DataFlair as command line argument what will be the output of the program ?
CorrectIncorrect -
Question 12 of 15
12. Question
Which of the following is the correct way to pass command line arguments for the given program ?
class Command {
public static void main ( String args [ ] )
{
System.out.println(args);
}
}
CorrectIncorrect -
Question 13 of 15
13. Question
Which of the following is the correct syntax to find the index of the last passed argument ?
CorrectIncorrect -
Question 14 of 15
14. Question
class CommandLine {
public static void main ( String args [ ] )
{
System.out.println(args[0]);
}
}
If no command line argument is passed to the program what will be the output of the program ?
CorrectIncorrect -
Question 15 of 15
15. Question
class Program {
public static void main ( String args [ ] )
{
System.out.println(args[2]);
}
}
If the above program is executed using java program company DataFlair webservices command line argument what will be the output of the program ?
CorrectIncorrect
Summary:
So you’ve taken the Java Command-Line Arguments Quiz and put your skills to the test! This quiz covered essential concepts like accessing arguments from the `String[] args` parameter in the `main` method, iterating through arguments, and converting arguments to different data types.
By reviewing both your correct and incorrect answers, you can gain valuable insights into your strengths and weaknesses in this crucial domain. Remember, effective learning is an ongoing journey. Explore additional resources beyond the quiz to deepen your understanding.
Consider tutorials and practice problems that delve into more advanced scenarios, such as validating user input and handling errors. By actively expanding your knowledge base, you’ll be well-equipped to tackle any command-line argument challenge that comes your way!
