'String.equals()' called with 'CharSequence' argument

Reports calls to String.equals() with a CharSequence as the argument.

String.equals() can only return true for String arguments. To compare the contents of a String with a non-String CharSequence argument, use the contentEquals() method.

Example:

  boolean equals(String s, CharSequence ch) {
    return s.equals(ch);
  }

After quick-fix is applied:

  boolean equals(String s, CharSequence ch) {
    return s.contentEquals(ch);
  }

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.

StringEqualsCharSequence

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 | Probable bugs

New in 2017.3

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