通过Java中的ArrayLists的ArrayList进行迭代 [英] Iterate through an ArrayList of ArrayLists in Java

问题描述

我有以下ArrayList ...

I have the following ArrayList...

ArrayList<ArrayList<Integer>> row1 = new ArrayList<ArrayList<Integer>>();

以下的arraylists被加入....

The following arraylists are added to it....

row1.add(cell1);
row1.add(cell2);
row1.add(cell3);
row1.add(cell4);
row1.add(totalStockCell);

我想遍历arraylist row1并打印内容。

I want to iterate through the arraylist row1 and print the contents.

循环中的循环会在这里工作吗？

Would a loop within a loop work here?

例如

while(it.hasNext()) {

//loop on entire list of arraylists
    while(it2.hasNext) {
      //each cell print values in list

          } }

推荐答案

这是你这样做的规范方式：

This is the canonical way you do it:

for(List<Integer> innerList : row1) {
    for(Integer number : innerList) {
        System.out.println(number);
    }
}

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