利用Collections类对基础类型进行排序

package com.Collection;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Collections2 {

public static void main(String[] args) {
// TODO Auto-generated method stub
//调用Arrays类的asList方法，直接给List赋值
List<Integer> l3 = Arrays.asList(6,2,4,1,5,9);
Collections.sort(l3);
System.out.println(l3);
//二分法查找
System.out.println(Collections.binarySearch(l3, 4));
}
}