import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class Main {
    public static void main(String[] args){
        String str = "국가 (0,2)(1,1)(2,1)(6,1)(8,1)(12,1)";
        Pattern p = Pattern.compile("\\((\\d+),(\\d+)\\)");
        Matcher m = p.matcher(str);
        System.out.println("괄호 포함, 괄호 안 전체");
        while (m.find()){
            System.out.println(m.group()); 
        }
        m.reset();
        System.out.println("괄호 안, 콤마 왼쪽");
        while (m.find()){
            System.out.println(m.group(1)); 
        }
        m.reset();
        System.out.println("괄호 안, 콤마 오른쪽");
        while (m.find()){
            System.out.println(m.group(2)); 
        }
    }
}
 

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