Java - How to find if a string contains all or any of the given strings while ignoring case?

Java String Manipulation Java 

Following code shows how to find if a string contains all or any of the provided strings while ignoring the cases.

package com.logicbig.example;

import java.util.Arrays;

public class ContainsAnyOrAll {

    public static boolean containsAny(String str, boolean ignoreCase, String... parts) {
        if (str == null || parts == null || parts.length == 0) {
            return false;
        }
        if (ignoreCase) {
            str = str.toLowerCase();
        }
        String finalStr = str;
        return Arrays.stream(parts)
                     .filter(s -> s != null && s.length() > 0)
                     .map(s -> ignoreCase ? s.toLowerCase() : s)
                     .anyMatch(s -> finalStr.contains(s));
    }

    public static boolean containsAll(String str, boolean ignoreCase, String... parts) {
        if (str == null || parts == null || parts.length == 0) {
            return false;
        }
        if (ignoreCase) {
            str = str.toLowerCase();
        }
        String finalStr = str;
        return Arrays.stream(parts)
                     .allMatch(s -> {//allMatch returns true if stream is empty so we cannot use filter()
                         if (s == null || s.length() == 0) {
                             return false;
                         }
                         if (ignoreCase) {s = s.toLowerCase();}
                         return finalStr.contains(s);
                     });
    }

    public static void main(String[] args) {
        String input = "Cheese bread avocado banana";

        boolean b = containsAny(input, true, "Banana");
        System.out.println(b);

        b = containsAny(input, true, "Beer", "Avocado");
        System.out.println(b);

        b = containsAll(input, true, "Beer", "Avocado");
        System.out.println(b);

        b = containsAll(input, true, "Banana", "Avocado");
        System.out.println(b);

        b = containsAny(input, true, "");
        System.out.println(b);

        b = containsAny(input, true, null, null);
        System.out.println(b);
    }
}

true
true
false
true
false
false