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Question: What is String.stripIndent() in Java 15?

Answer:

Suppose we have a multi-line string where each line is intended and has some trailing spaces, such as the following. We print each line, bounded by two vertical bars.

String html = """
      <html>    s
        <body>      s
          <h1>Hello!</h1>
       </body>    s
      </html>         s
""";

html.lines()
    .map(line -> "|" + line + "|")
    .forEachOrdered(System.out::println);Code language: Java (java)

As you learned in the first chapter, the alignment of a text block is based on the closing quotation marks. The output, therefore, looks like this:

|  <html>     |
|    <body>       |
|      <h1>Hello!</h1>|
|    </body>     |
|  </html>          |

Using the stripIndent() method, we can remove the indentation and trailing spaces:

html.stripIndent()
    .lines()
    .map(line -> "|" + line + "|")
    .forEachOrdered(System.out::println);

The output is now:

|<html>|
|  <body>|
|    <h1>Hello!</h1>|
|  </body>|
|</html>|

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Question: What is String.stripIndent() in Java 15?

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