/* 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
	{
		System.out.println(plusOut("1234xy5678", "xy"));
	}
	public static String plusOut(String str, String word) {
        String bob = str.replaceAll("[^" + word + "]", "+");
        return bob;
    }
}

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