Java - 从列表中检索值
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Java - Retrieve values from List
提问by user1926452
I added 3 strings into a List (Should I call this ArrayList ?) And don't know how to retrieve.
我在 List 中添加了 3 个字符串（我应该称它为 ArrayList 吗？）但不知道如何检索。
String f1;
String f2;
String f3;
f1="1";
f2="2";
f3="3";
List<String[]> list = new ArrayList<String[]>();
String[] e = new String[] {f1,f2,f3};
list.add(e);
System.out.println(list.get(0,1));
for (int inT=0;inT<=list.size();inT++)
{
System.out.println(list.get(inT));
}
回答by Jayamohan
If you just want to add some items and retrive them you dont need a separate arrays to be stored in the ArrayList. List means List of arrays and not List of Strings.
如果您只想添加一些项目并检索它们，则不需要将单独的数组存储在 ArrayList 中。列表表示数组列表而不是字符串列表。
You should be doing this,
你应该这样做，
String f1;
String f2;
String f3;
f1 = "1";
f2 = "2";
f3 = "3";
List<String> list = new ArrayList<String>();
list.add(f1);
list.add(f2);
list.add(f3);
for (String listItem : list) {
System.out.println(listItem);
}
