Affects PMD Version:

All, including 6.28.0.

Rule: SwitchStmtsShouldHaveDefault

Description:

	public String foo(String foo) {
		switch (foo) {
			case "=" -> foo = "eq";
			case "!=" -> foo = "ne";
			default -> throw new IllegalArgumentException();
		}
		return foo + 'a';
	}

This causes a SwitchStmtsShouldHaveDefault warning.

Running PMD through: [CLI | Ant | Maven | Gradle | Designer | Other]

Gradle.