/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception	{
		Scanner scanner1 = new Scanner("a[");
		System.out.println(scanner1.hasNext("a\\[")); // Does not trigger assertion
		System.out.println(scanner1.delimiter());
		Scanner scanner2 = new Scanner("[ [0]]");
		System.out.println(scanner2.hasNext("\\["));  // Triggers assertion, but why?
 
		Scanner scanner3 = new Scanner(" a[ [ [0]]");
		System.out.println(scanner3.hasNext("a\\[")); // Triggers assertion, but why?
	}
}

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