Check the frequency of an element in Java

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class Demo {
	public static void main(String[] args) {
		List<String>list = Arrays.asList("P","Q","R","P","T","P","U","V","W","X","W" );
		int checkOccurrence = Collections.frequency(list, "P");
		System.out.println("Occurrence of P = " + checkOccurrence);
		checkOccurrence = Collections.frequency(list, "W");
		System.out.println("Occurrence of W = " + checkOccurrence);
		checkOccurrence = Collections.frequency(list, "T");
		System.out.println("Occurrence of T = " + checkOccurrence);
	}
}