import java.util.*;
import java.io.*;
import java.util.regex.*;
import java.util.List;
class Program {
String subject
= "[rotura de lunas]Gar_1 blah [rotura de lunas]noGar"; String replaced
= subject.
replaceAll("(?s)((\\[[^\\]]*\\])Gar_1)(.*?)(\\2noGar)",
"$2noGar$3$4");
} // end main
} // end Program
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