/* 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
	{
		// your code goes here\d\d_[a-zA-Z]{3}_\d{4}
		String replaceDate = "12_Feb_2017";
		String name = "abc_efg_the_xyz_24_Mar_2016.csv ";
 
		name = name.replaceAll("\\d\\d_[a-zA-Z]{3}_\\d{4}", replaceDate);
		System.out.println(name);
	}
}

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