How to create a Scanner nextChar method.A simple Java Scanner String input example.Learn the easiest ways to handle user input in Java, and format any console output with printf. The import statement at the top of many Java classes means that somewhere in the code, the Scanner class is being used. When you add an import statement to your code, you are telling the Java compiler that you need access to a class that isn’t accessible by default. To keep your code readable and less verbose, a Java Scanner import is recommended. In order to use the Java Scanner class in your code, you must either fully reference the java.util package when you call the Scanner, or you must add a Java Scanner import statement at the start of your class. Neither am I able to understand the errors occuring in each of the platform, nor the reason why it is behaving differently for each of them is apparent to me.However, there is one minor complexity the Java Scanner class add into the software development mix. There, it works till taking the input for array, but after that nothing happens. The code compiled fine, but nothing happens after it takes the input for n.Īfter this, I tried using NetBeans to run this program. Then I ran the same code by writing it on a text editor on my computer, and then compiling it on the command prompt. I ran this code firstly on an online compiler, which gave the following exception: Enter the number of elements:Now enter array elements.Enter:Įxception in thread 'main' Īt java.base/(Scanner.java:937)Īt java.base/(Scanner.java:1594)Īt java.base/(Scanner.java:2258)Īt java.base/(Scanner.java:2212) I wrote the following code for that: import java.util.* I am trying to implement the Dutch flag problem in Java.

Java compiler online with scanner