我有一个字符串数组列表names'.which包含people.i的名字要排序的字母ArrayList中order.plz帮我

i am having a string arraylist 'names'.which contains names of people.i want to sort the arraylist in alphabetical order.plz help me

推荐答案

这将解决您的问题...

This will solve your problem...

ArrayList arrayList = new ArrayList();

//Add elements to Arraylist
arrayList.add("1");
arrayList.add("3");
arrayList.add("5");
arrayList.add("2");
arrayList.add("4");


Collections.sort(arrayList);

//display elements of ArrayList
System.out.println("ArrayList elements after sorting in ascending order : ");
for(int i=0; i<arrayList.size(); i++)
    System.out.println(arrayList.get(i));

要排序的ArrayList对象，使用 Col​​lection.sort 方法。这是一个 静态方法。它的排序ArrayList对象的元素融入升序排列。

To sort an ArrayList object, use Collection.sort method. This is a static method. It sorts an ArrayList object's elements into ascending order.

以防万一，若跌破code的评论不工作是指... 试试这个code ..

Just in case if the below code in comment doesnt work means... Try this code..

创建一个自定义比较器类：的

import java.util.Comparator;

class IgnoreCaseComparator implements Comparator<String> {
  public int compare(String strA, String strB) {
    return strA.compareToIgnoreCase(strB);
  }
}

然后在你的排序：

Then on your sort:

IgnoreCaseComparator icc = new IgnoreCaseComparator();

java.util.Collections.sort(arrayList,icc);