I guess you are using an IDE (like Netbeans or eclipse) which allows you to run the code even if certain classes are not compilable. During the application's runtime, if you access this class it would lead to this exception.
Solution :- Simply Clean Your Project and Build and Run Then Again.
Answer from Vikrant Kashyap on Stack OverflowI guess you are using an IDE (like Netbeans or eclipse) which allows you to run the code even if certain classes are not compilable. During the application's runtime, if you access this class it would lead to this exception.
Solution :- Simply Clean Your Project and Build and Run Then Again.
Make sure you have configured PATH, CLASSPATH and JAVA_HOME variable in system Environment variable.
1) It might refers older version of java then 1.5
or
2) May be not added PATH,CLASSPATH, JAVA_HOME variable there.
BTW Your code is works fine in my Eclipse.
I'm trying to import the scanner class into my program (I'm using NetBeans) but when I type "import java.util.Scanner;" I get an error that says "cannot find symbol: class Scanner"
I thought maybe I typed it wrong so I even copy and pasted the line from code on a different working project and it's still saying that. Not sure where to go from here. Anyone know what could be causing this error?
netbeans - Java "import java.util.Scanner" not working - Stack Overflow
eclipse - how to import java.util.Scanner - Stack Overflow
Can't import java.util.scanner, even though have downloaded new JDK
Scanner needs a capital S. Class names in Java are always capitalised.
More on reddit.com"import java.util.Scanner;" isnt working, the message "Import "java.util.Scanner" could not be resolved" pops up, what am i doing wrong?
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The problem is basically stated in the title. I've tried everything I could think of and what I have found in Google but nothing could resolve my problem. I'm currently running Java 11.02 on IntelliJ community edition (but have also tried with 11, no success though). The "java.util.scanner" isn't even underlined with a wavy red, but instead the word "scanner" is shown in red, the title is underlined though.
Does anyone know what I could try?
I tested if Java was running in command prompt and it said it was and i installed the extensions yet it still doesnt work, what am i doing wrong
I recently started learning Java and I'm having trouble understanding how this code works -
import java.util.Scanner;
class Program {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.print("Input a number: ");
int num = in.nextInt();
System.out.printf("Your number: %d \n", num);
in.close();
}
}
Why do I need to know this?I am new to coding and have been following bro codes java coding series and the command doesn't work i tried adding it in myself but eclipse just doesn't care if i type it in and run the command it says error occurred during initialization of boot layer java.lang.module.findexception: module format not recognized and shows a path to my project files to one of the scanner libraries i manually putted in what do i do?
The import goes here:
import java.util.Scanner;
public class JavaApplication2 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
// code here
}
}
It is not a property of the class but a reference the compiler needs to be able to tell what "Scanner" (in this context) refers to. In this case it states that Scanner is defined in java.util which is part of the Java Runtime Environment (JRE).
Furthermore as you go on coding you should structure your files into folders.
As soon as you do so you will have to add this type of line in the first line of the file: package folderName.folderName0.
If you want to use one of your classes from another one you will have to add an import like: import folderName.folderName0.JavaApplication2
You've put an entire java source file into a main function. Simply do this instead:
import java.util.Scanner;
public class JavaApplication2 {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
}
}