Convert try / finally to use() call

Last modified: 03 December 2024

Reports a try-finally block with resource.close() in finally which can be converted to a resource.use() call.

use() is easier to read and less error-prone as there is no need in explicit close() call.

Example:

fun example() {
    val reader = File("file.txt").bufferedReader()
    try {
        reader.lineSequence().forEach(::print)
    } finally {
        reader.close()
    }
}

After the quick-fix applied:

fun example() {
    File("file.txt").bufferedReader().use { reader ->
        reader.lineSequence().forEach(::print)
    }
}

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.

ConvertTryFinallyToUseCall
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 | Kotlin | Style issues

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Kotlin, 243.23126-IJ