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Java Java Basics Perfecting the Prototype Reviewing Our Feedback

Saad Zafar
Saad Zafar
905 Points
Posted by Saad Zafar
Saad Zafar
905 Points

Why doesn't console.printf or console.readLine work in the Eclipse IDE? I get a null pointer exception.

Why doesn't console.printf or console.readLine work in the Eclipse IDE? I get a null pointer exception.

In the top we import java.io.Console; and I have that in the code as well. Is there a part of this course that explains this?

2 Answers

markmneimneh
markmneimneh
14,132 Points
markmneimneh
markmneimneh
14,132 Points

Adding to what Adam stated, in Eclipse IDE, you can use System.out.printf instead of console.printf and it should be fine.

Adam Sawicki
Adam Sawicki
15,967 Points
Adam Sawicki
Adam Sawicki
15,967 Points

In IntelliJ IDEA there is the same problem. The issue is that most IDEs to run programs use program javaw instead of java. This program runs without any link with system console but it supports input/output streams. IDEs use their own way to communicate and input information during program flow it uses System.in, System.out to show all needed information in prepared tab called probably "Console" (I don't use Eclipse ;))

Saad Zafar
Saad Zafar
905 Points
Saad Zafar
Saad Zafar
905 Points

Thanks for the answer that makes sense.