我的第一个java程序

class TestCharset 
{

    private void execute()
    {
        String s = "Hello World! 我是张三";
        
        byte[] bytes = s.getBytes();

        System.out.println("bytes lenght is:" + bytes.length);
    }

    public static void main(String[] args) 
    {
        try
        {
         new TestCharset().execute();
        }
        catch(Exception ex)
        {
         System.out.println("" + ex.toString());
 
        }
        finally
        {
                System.out.println("/nIt's Over,Successful !/n");
        }
    }
}