properties {0}{1}

import java.text.MessageFormat;


public class Test {

public static void main(String[] args) {
String format1 = "{0} while loading: {1}";
    String format2 = "{1} loaded unsuccessfully: {0}";
    String exceptionName = "I/O Exception";
    String filename = "Foobar.java";
    Object [] fmtargs = {exceptionName, filename};
    System.out.println (
      MessageFormat.format (format1, fmtargs));
    System.out.println (
      MessageFormat.format (format2, fmtargs));

}

}