import java.util.List;
import java.util.LinkedList;
import java.util.ArrayList;
public class ListTest_1{
public static void main(String[] args){
System.out.println("The class is to test java.util.List; ");
List li=new LinkedList();
//List li=new ArrayList();
li.add("a");
li.add("b");
li.add("c");
li.add("d");
li.add("e");
li.add("f");
li.add(1,"1");
//li.add(9,"2");该写法错误,不存在第9个位置
//取得元素总个数
System.out.println("The size of element is: "+li.size());
//取得第一个元素
System.out.println("The first element is: "+li.get(0)+" ");
System.out.println("All of the element is:");
for(int i=0;i<li.size();i++){
System.out.println("Element "+i+": "+li.get(i));
}
}
/*
运行结果
The class is to test java.util.List;
The size of element is: 7
The first element is: a
All of the element is:
Element 0: a
Element 1: 1
Element 2: b
Element 3: c
Element 4: d
Element 5: e
Element 6: f
*/
}