import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class Main
{
private static final Pattern pattern = Pattern.compile("parameters=\\s*\\[(.*)]", Pattern.DOTALL);
public static void main(String[] args) {
String string = "node {\n"
+ " stage(someString) {\n"
+ " try {\n"
+ " **parameters= [\n"
+ " [someString],\n"
+ " [someString],\n"
+ " [someString],\n"
+ " [someString],\n"
+ " [someString],\n"
+ " [someString],\n"
+ " [someString],\n"
+ " ]**\n"
+ " //some more script";
StringBuilder sb = new StringBuilder();
Matcher matcher = pattern.matcher(string);
while(matcher.find()){
sb.append(matcher.group(1).replaceAll("[\\s,]+", " "));
}
System.out.println(sb.toString());
}
}
