Standard 'Charset' object can be used

Reports methods and constructors in which constant charset String literal (for example, "UTF-8") can be replaced with the predefined StandardCharsets.UTF_8 code.

The code after the fix may work faster, because the charset lookup becomes unnecessary. Also, catching UnsupportedEncodingException may become unnecessary as well. In this case, the catch block will be removed automatically.

Example:

  try {
    byte[] bytes = "str".getBytes("UTF-8");
  } catch (UnsupportedEncodingException e) {
  }

After quick-fix is applied:

byte[] bytes = "str".getBytes(StandardCharsets.UTF_8);

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

CharsetObjectCanBeUsed

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Code style issues

The inspection is available in Java 7 and later.

New in 2018.2

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024