我有一个书单如下
public static ArrayList<List<String>> booksList = new ArrayList<List<String>>();
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并填充如下所示
booksList.add(Arrays.asList("Coders at Work", null));
booksList.add(Arrays.asList("Code Complete",null));
booksList.add(Arrays.asList("The Mythical Man Month",null));
booksList.add(Arrays.asList("Don't Make Me Think",null));
booksList.add(Arrays.asList("The Pragmatic Programmer",null));
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我想将项目添加到特定行的列表中 Arraylist
booksList.get(0).add("BUYED");
booksList.get(0).add(0,"BUYED");
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但它不起作用.如何添加更多物品?或者有更好的方法来处理这种情况吗?