Java 如何在数组列表上打印单个项目
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How do I print a Single item on a Array List
提问by Brendan ten
So I want to system print one of the names on my array list I was thinking it's like System.out.print(Names[1]) for the second item on my array list?
所以我想系统打印我的数组列表中的一个名称我认为它就像 System.out.print(Names[1]) 对于我的数组列表中的第二个项目？
System.out.println("How Many Employees On your Payroll");
Employees = reader.nextDouble();
ArrayList Names = new ArrayList();
for (int i=1;i<=Employees;i++)
{
System.out.println("What is the name for Employee #"+i+"");
String userName = userInputScanner.nextLine();
Names.add(userName);
}
System.out.println("Do these Names Seem Correct?: " + Names);
采纳答案by Alex Kartishev
First of all try to obey Java code conventions: http://www.oracle.com/technetwork/java/javase/documentation/codeconventions-135099.html#367
首先尽量遵守Java代码约定：http: //www.oracle.com/technetwork/java/javase/documentation/codeconventions-135099.html#367
And to get the second element of the list use
并获取列表的第二个元素使用
names.get(1);
Where namesis your list.
names你的清单在哪里。
回答by Eng.Fouad
The JavaDocis your friend. Use ArrayList#get(int index).
该JavaDoc的是你的朋友。使用ArrayList#get(int index).
回答by mok
First, ArrayList is a generic type so it's better to use ArrayList , for example:
首先， ArrayList 是一个泛型类型，所以最好使用 ArrayList ，例如：
ArrayList<String> Names = new ArrayLis<String> ();
Second,You can access the i'th number of an ArrayList (Say Names) by "get(int index)" method:
其次，您可以通过“get(int index)”方法访问 ArrayList (Say Names) 的第 i 个数字：
Names.get(1)//to get the second items
