1.MessageFormat.format

import java.text.MessageFormat;/** * Created by SYJ on 2017/9/13. */public class MainTest {    public static void main(String[] args) {        String url = "http://xxx.xxx.xxx?name={0}&age={1}";        String path = MessageFormat.format(url, "张三", 18);        System.out.println(path);//http://xxx.xxx.xxx?name=张三&age=18    }}

2.String.format

/** * Created by SYJ on 2017/9/13. */public class MainTest {    public static void main(String[] args) {        String url = "http://xxx.xxx.xxx?name=%s&age=%d";        String path = String.format(url, "张三", 18);        System.out.println(path);//http://xxx.xxx.xxx?name=张三&age=18    }}