Java开发网 - 哪位有可排序的Properties类？

Topic: 哪位有可排序的Properties类？

1.哪位有可排序的Properties类？	Copy to clipboard
Posted by: jfml Posted on: 2003-07-11 17:05 java自己的Properties类是散列数据的我想根据.prp文件中的kv出现顺序得到相应的集合哪位有类似源码share一下谢谢

2.Re:哪位有可排序的Properties类？ [Re: CrazyJavar]	Copy to clipboard
Posted by: greenflute Posted on: 2003-07-17 12:00 You should make sure whether the key or the value is what you want to sort, then you may dump all your properties into an ArrayList, then use Collections.sort(List, Comparator) method to sort it (do not forget to implement your own Comparator).

3.Re:哪位有可排序的Properties类？ [Re: greenflute]	Copy to clipboard
Posted by: ditty Posted on: 2003-07-17 13:36 可以自己实现一个嘛！比如用两个Vector (或ArrayList),分别保存Key和Value. 只要实现两个列表的同步就可以了。

4.Re:哪位有可排序的Properties类？ [Re: CrazyJavar]

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Posted by: frankwg
Posted on: 2003-07-18 12:37

try following code snippet:


package scrapbook;

import java.util.Properties;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Map;
import java.util.TreeMap;
import java.util.Iterator;

public class OrderedProperties {

    public static void main(String[] args) {
        Properties prop = new Properties();
        try {
            prop.load(new FileInputStream("test.properties"));
        }
        catch (IOException ex) {
            System.out.println("I/O Error!!! Probably \"test.properties\" not found.");
        }

        Map orderedProp = new TreeMap(prop);

        Iterator itr = orderedProp.entrySet().iterator();
        while (itr.hasNext()) {
            Map.Entry entry = (Map.Entry) itr.next();
            System.out.println(entry.getKey() + "=" + entry.getValue());
        }
    }
}