java中将ArrayList转换为Array [英] Converting ArrayList to Array in java

问题描述

我有一个 ArrayList，其值类似于abcd#xyz"和mnop#qrs".我想将它转换为一个数组，然后用 # 作为分隔符将其拆分，并将 abcd,mnop 放在一个数组中，并将 xyz,qrs 放在另一个数组中.我尝试了以下代码:

I have an ArrayList with values like "abcd#xyz" and "mnop#qrs". I want to convert it into an Array and then split it with # as delimiter and have abcd,mnop in an array and xyz,qrs in another array. I tried the following code:

String dsf[] = new String[al.size()];              
for(int i =0;i<al.size();i++){
  dsf[i] = al.get(i);
}

但它没有说Ljava.lang.String;@57ba57ba"

But it failed saying "Ljava.lang.String;@57ba57ba"

推荐答案

你不需要重新发明轮子，这里是toArray()方法:

You don't need to reinvent the wheel, here's the toArray() method:

String []dsf = new String[al.size()];
al.toArray(dsf);

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