class testString1{

    public static void main(String args[]){
        String str1 = new String("Hello World!");
        String str2 = new String("こんにちは");

        System.out.println(str1 + "の長さは" + str1.length() + "です");
        System.out.println(str2 + "の長さは" + str2.length() + "です");
    }
}