java.text.MessageFormat

Strutsで見る{0} is require!!これどうやってやってるのか調べたら、java.text.MessageFormatで可能

import java.text.MessageFormat;

public class Client {
    public static void main(String[] args) throws Exception {
        Object[] objs = { new String("hoge") };
        MessageFormat mf = new MessageFormat("Hello World {0}");
        System.out.println(mf.format(objs));
    }
}