Java printff字符串只输出格式(Java printff string only output formatting)

Java printff字符串只输出格式(Java printff string only output formatting)

如何使用printf格式化输出。

假设我想在格式化程序中打印以下内容。

testing testing testing testing testingggg testingggg testingggg testingggg

我不是在问使用“\ t”，我问的是printf样式格式？ 如果有人能给我一些建议和例子。 或者可以与示例链接。 我可以做到符合我的需求。

How do I format output by using printf.

suppose i want to print following in formatter.

testing testing testing testing testingggg testingggg testingggg testingggg

I am not asking about using "\t", I am asking on printf style formatting? If some one can give me suggestion and example. Or may be link with example. I can do it to fit my need.

最满意答案

我认为你正在寻找Formatter类，它为Java做了printf风格的格式化。

例如，适用于您的输入：

StringBuilder sb = new StringBuilder(); Formatter formatter = new Formatter(sb, Locale.US); formatter.format("%1$-15s %2$-15s %3$-15s %4$-15s\n", "testing", "testing", "testing", "testing"); formatter.format("%1$-15s %2$-15s %3$-15s %4$-15s", "testingggg", "testingggg", "testingggg", "testingggg"); System.out.println(sb.toString());

生产：

testing testing testing testing testingggg testingggg testingggg testingggg

I think you're looking for the Formatter class, which does printf-style formatting for Java.

For example, applied to your input:

StringBuilder sb = new StringBuilder(); Formatter formatter = new Formatter(sb, Locale.US); formatter.format("%1$-15s %2$-15s %3$-15s %4$-15s\n", "testing", "testing", "testing", "testing"); formatter.format("%1$-15s %2$-15s %3$-15s %4$-15s", "testingggg", "testingggg", "testingggg", "testingggg"); System.out.println(sb.toString());

Produces:

testing testing testing testing testingggg testingggg testingggg testingggg