Java 判斷兩個字符串是否由相同的字符構成

public class Main{
    private static Boolean check(String a,String b){
        if(a.length()==b.length()){
            for(String s:a.split("")){
                if(!b.contains(s)){
                    return false;
                }
            }
            return true;
        }
        return false;
    }

    public static void main(String[] args) {
        long x = System.currentTimeMillis();
        System.out.println(check(
                "awscfvgbhnjkawscfvgbhnjkkljgbcawscfvgbhnjkkljgbckljgbc",
                "awscjkkljgbcawsnjkawscfvgbhnljgcfvgbhnjkkfvgbhbckljgbc"));
        System.out.println("耗時："+(System.currentTimeMillis()-x));
    }
}