Description Manoj N Palat 2013-12-16 04:08:18 EST

import java.util.Comparator;
interface I {
	public void doit();
}

class X {
	public Comparator<String> bar() {
		Comparator<String> c  = (String s1, String s/*here*/)  -> s1.compareToIgnoreCase(s2);
		return c;
	}
}

Press <Ctrl-Space> before /*here*/ and switch is shown as a choice (so does synchronized)
See Bug 424088 as well (these may be related)