java.util.NoSuchElementException: No line found

Cause of java.util.NoSuchElementException: No line found

This error java.util.NoSuchElementException: No line found occurs due to the end of file problem while writing your code. Sometimes it happens that we include the Scanner object without checking whether there is an option for the next line or not which is the main cause behind this error. In Java, we have a different function for it known as hasnextLine(). This function detects the next line in the text we enter as input. The error message due to this problem comes as: 

java.util.NoSuchElementException: No line found     
   at java.util.Scanner.nextLine(Unknown Source)

Solution 

When a file is read in Java, its contents are typically stored in a variable like a String. If the file’s end is reached, a null, or nothing, will be returned as the value. If the returned value is null, we can check the file’s end.

One of the solutions to this problem can be always checking the end of file option while applying the scanner object. One more function we need to keep in mind is that the hasNextLine(). In more technical terms this act as a while loop like:

while(sc.hasNextLine()){
    str=sc.nextLine();
    //...
}

One more solution to this problem is simply not closing the scanner object in any particular function. This is one of the most important things to keep in mind while writing the code. 

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