Java printff 字符串只输出格式 [英] Java printff string only output formatting

问题描述

如何使用 printf 格式化输出.

How do I format output by using printf.

假设我想在格式化程序中打印以下内容.

suppose i want to print following in formatter.

testing testing testing testing
testingggg  testingggg  testingggg  testingggg

我不是问使用\t"，我问的是 printf 样式格式?如果有人能给我建议和例子.或者可以与示例链接.我可以满足我的需要.

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.

推荐答案

我认为您正在寻找 Formatter 类，它为 Java 执行 printf 风格的格式化.

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

例如，应用于您的输入:

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());

产生:

testing         testing         testing         testing        
testingggg      testingggg      testingggg      testingggg    

这篇关于Java printff 字符串只输出格式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！