Java使用占位符生成字符串 [英] Java generating Strings with placeholders

问题描述

我正在寻找能够实现以下目标的东西：

I'm looking for something to achieve the following:

String s = "hello {}!";
s = generate(s, new Object[]{ "world" });
assertEquals(s, "hello world!"); // should be true

我可以自己写，但在我看来，我看到了一个图书馆一旦这样做，可能是slf4j记录器，但我不想写日志消息。我只是想生成字符串。

I could write it myself, but It seems to me that I saw a library once which did this, probably it was the slf4j logger, but i don't want to write log messages. I just want to generate strings.

你知道一个这样做的库吗？

Do you know about a library which does this?

推荐答案

参见 String.format 方法。

String s = "hello %s!";
s = String.format(s, "world");
assertEquals(s, "hello world!"); // should be true

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