Question

java String[] 转为ArrayList

不是转成List 是ArrayList
最好不用for循环

Answer 1

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Test {
public static void main(String[] a) {
String [] s=new String[] {"1","2"};
List l=new ArrayList();
l=Arrays.asList(s);
System.out.println(l);
}
}

Answer 2

alist.toArray(str);
这个可以把list转化为String[]

Answer 3

List<String> sList = new ArrayList<>(Arrays.asList(new String[]{ "123", "342", "2134" }));