/* 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
	{
		String[] a = {"q", "w", "e"};
		Object[] b = a;
		CharSequence[] c = a, d = (CharSequence[])b;
 
		for (String       x : a) System.out.print(x + " ");   System.out.println();
		for (Object       x : b) System.out.print(x + " ");   System.out.println();
		for (CharSequence x : c) System.out.print(x + " ");   System.out.println();
		for (CharSequence x : d) System.out.print(x + " ");   System.out.println();
	}
}

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