字符串的 Java 输出格式 [英] Java output formatting for Strings

问题描述

我想知道是否有人可以向我展示如何使用 Java 字符串的格式方法.例如，如果我希望所有输出的宽度相同

I was wondering if someone can show me how to use the format method for Java Strings. For instance If I want the width of all my output to be the same

例如，假设我总是希望我的输出相同

For instance, Suppose I always want my output to be the same

Name =              Bob
Age =               27
Occupation =        Student
Status =            Single

在这个例子中，所有的输出都整齐地排列在彼此之下；我将如何使用 format 方法完成此操作.

In this example, all the output are neatly formatted under each other; How would I accomplish this with the format method.

推荐答案

这是一个非常原始的答案，但我无法删除它，因为它已被接受.请参阅下面的答案以获得更好的解决方案

为什么不直接生成一个空白字符串来插入到语句中.

This is an extremely primitive answer but I can't delete it because it was accepted. See the answers below for a better solution though

Why not just generate a whitespace string dynamically to insert into the statement.

所以如果你想让它们都从第 50 个字符开始......

So if you want them all to start on the 50th character...

String key = "Name =";
String space = "";
for(int i; i<(50-key.length); i++)
{space = space + " ";}
String value = "Bob
";
System.out.println(key+space+value);

将所有这些放在一个循环中，并在每次迭代之前初始化/设置键"和值"变量，您就大功告成了.我也会使用 StringBuilder 类，这样效率更高.

Put all of that in a loop and initialize/set the "key" and "value" variables before each iteration and you're golden. I would also use the StringBuilder class too which is more efficient.

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