import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
class Ideone
{
{
String text
= "Hello {{ some | value }}, this is what i tried {{ another | value }}"; text = text.replaceAll("\\{\\{\\s*((?:(?!\\{\\{)[^|])*?)\\s*\\|\\s*(.*?)\\s*\\}\\}", "$1");
}
}
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