import java.util.Arrays;
import org.apache.commons.lang.StringUtils;
String ss[] = "马超","马云","关羽","刘备","张飞";
①System.out.println("ss:"+StringUtils.join(ss, ","));//
②System.out.println("ss:"+Arrays.toString(ss));
③System.out.println("ss:"+String.format("%s,%s,%s", ss));
注意第②种打印数组ss是在最外面加了"[]",你试试就知道。