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'size() == 0' can be replaced with 'isEmpty()'

Reports .size() or .length() comparisons with a 0 literal that can be replaced with a call to .isEmpty().

Example:

boolean emptyList = list.size() == 0;

After the quick-fix is applied:

boolean emptyList = list.isEmpty();

Use the Ignored classes table to add classes for which any .size() or .length() comparisons should not be replaced.

Use the Ignore expressions which would be replaced with !isEmpty() option to ignore any expressions which would be replaced with !isEmpty().

Inspection options

Option

Type

Default

Ignored classes

StringList

[]

Ignore expressions which would be replaced with '!isEmpty()'

Checkbox

false

Inspection Details

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3

Plugin:

Java, 233.SNAPSHOT

Last modified: 13 July 2023