Text block can be used

Reports String concatenations that can be simplified by replacing them with text blocks.

Requirements:

\n occurs two or more times.
Text blocks are not concatenated.

Use the Apply to single string literals option to suggest the fix for single literals containing line breaks.

Example:

String html = "<html>\n" +
              "    <body>\n" +
              "        <p>Hello, world</p>\n" +
              "    </body>\n" +
              "</html>\n";

After the quick-fix is applied:

String html = """
              <html>
                  <body>
                      <p>Hello, world</p>
                  </body>
              </html>
              """;

This inspection only reports if the language level of the project or module is 15 or higher.

New in 2019.3

Inspection options

Option	Type	Default
Apply to single string literals	Checkbox	false

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023