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Double scanners
Why is this not working? It only prints out the first input import java.util.Scanner; class MyClass { public static void main(String[ ] args) { Scanner myVar = new Scanner(System.in); System.out.println(myVar.nextInt()); Scanner myInt = new Scanner(System.in); System.out.println(myInt.nextInt()); } } Response: 123 Exception in thread "main" java.util.NoSuchElementException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at MyClass.main(MyClass.java:8)
2 Réponses
+ 6
myVar.nextInt();
myVar.nextInt();
There is no need of creating two instances of the Scanner. You can take any number of inputs* with only ONE instance!
* This depends on its scope. { } is a scope block. Anything declared INSIDE it, cannot be used anywhere OUTSIDE.
+ 1
You need to type in two user inputs
For example:
123
123
Since you created two scanners, you need to type in a user input twice