/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
/* 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 str = "0 - Amount: 3 - Class 29\n1 - Amount: 2 - Class 21\n2 - Amount: 11 - Class 1";
 
		Pattern pattern = Pattern.compile("Amount: (\\d*) - Class (\\d*)");
		Matcher matcher = pattern.matcher(str);
 
		StringBuffer sb = new StringBuffer("{");
		while (matcher.find())
		{
			sb.append(String.format("{%s, %s},", matcher.group(1), matcher.group(2)));
		}
		sb.setLength(sb.length()-1); // remove last comma
		sb.append("}");
 
		System.out.println(sb.toString());
 
	}
}

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