/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* 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 text = "(слива) какие-то другие слова [яблоко], еще слова {груша}.";
		System.out.println(text.replaceAll("([(\\[{]).*?([)\\]}])", "$1фрукт$2"));
		text = text.replaceAll("(\\(|\\[|\\{).*?(\\)|\\]|\\})", "$1фрукт$2");
		System.out.println(text); 
	}
}

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