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Hello Everyone, Yesterday when I was reading an article on ways to read input from the user when I came across a method that said "Using Console Class."

// Java program to demonstrate working of System.console()
// Note that this program does not work on IDEs as
// System.console() may require console
public class Sample {
    public static void main(String[] args)
        // Using Console to input data from user
        String name = System.console().readLine();

        System.out.println("You entered string " + name);

When I tried to run the above code on an online, interactive compiler it's giving the error: Exception in thread "main" java.lang.NullPointerException at Sample.main(

Why is this happening?

I also tried to create an object of Console class and then call the .readLine() function but it gave me the same error.

What I have tried:

I just run the program in online compiler and getting some error
Updated 24-Nov-21 21:51pm
Richard Deeming 25-Nov-21 3:52am    
I have removed the link to the "interview questions site" online compiler, since it made your question look like spam. A simple Google search will find many online Java compilers, if anyone needs one.
Richard MacCutchan 25-Nov-21 7:16am    
I have tested this locally and it works. The issue is most likely to do with using the online web service.

1 solution

Maybe you should use, since the console does not seem to be available.
There is a clear example of basic I/O just below compiler's window.
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