Anonymous type has shorter lambda alternative

Reports anonymous classes which could be transformed to a constructor or a factory method call with a lambda expression argument.

The following classes are reported by this inspection:

Anonymous classes extending ThreadLocal which have an initialValue() method (can be replaced with ThreadLocal.withInitial)
Anonymous classes extending Thread which have a run() method (can be replaced with new Thread(Runnable)

Example:

new Thread() {
  @Override
  public void run() {
    System.out.println("Hello from thread!");
  }
}.start();

After the quick-fix is applied:

new Thread(() -> {
  System.out.println("Hello from thread!");
}).start();

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

Last modified: 13 July 2023