String[][] names={{"tom","jack","mike"},{"zhangsan","lisi","wangwu"}};
                
  // 通过二重循环输出二维数组中元素的值
  for (int i = 0; i <names.length; i++) {
           
   for (int j = 0; j < names[i].length; j++) {
               
    System.out.println(names[i][j]);
   }
           
   System.out.println();
  }