A brief discussion on the use of Arrays.asList() method
First, this method is to convert the array into a list. There are the following points to note:
(1) This method is not suitable for basic data types (byte, short, int, long, float, double, boolean)
(2) This method Link arrays with lists, and when one of them is updated, the other automatically updates
(3) The add and remove methods are not supported
The above code:
package com.hdu.test;
import java.util.Arrays;
import java.util.List;
abstract public class AsllistTest {
public static void main(String[] args) {
String[] s = {"aa","bb","cc"};
List<String> strlist = Arrays.asList(s);
for(String str:strlist){
System.out.println(str);
}
System.out.println("------------------------");
//基本数据类型结果打印为一个元素
int[] i ={11,22,33};
List intlist = Arrays.asList(i);
for(Object o:intlist){
System.out.println(o.toString());
}
System.out.println("------------------------");
Integer[] ob = {11,22,33};
List<Integer> oblist = Arrays.asList(ob);
for(int a:oblist){
System.out.println(a);
}
System.out.println("------------------------");
}
}Running results :
aa bb cc ------------------------ [I@15db9742 ------------------------ 22 ------------------------
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