Question

java array数组给长度了怎么赋初值

Answer 1

既然没有在声明时赋值，那再写一个赋值语句就行了。

Answer 2

String arg[] = new String[3];
arg[0] = "1";
arg[1] = "23";
arg[2] = "333";

Answer 3

arr[index] = object;