你可以这样定义 

String[][] names = new String[2][3];

names[0][0] = "tom";

names[0][1] = "jack";

names[0][2] = "mike";

names[1][0] = "zhangsan";

names[1][1] = "lisi";

names[1][2] = "wangwu";

能不能 定义成 String [2][3]     names={{"tom","jack","mike"},{"zhangsan","lisi","wangwu"}};？？