对集合进行排序代码,Java代码库,德仔网

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【Java】对集合进行排序

作者:trs_li / 发布于2013/9/2/ 694


	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.List;

	

	public class Test {
	
	public Test(){
	 Object[] new1 = {"1","a","c"};
	 Object[] new2 = {"8","a","c"};
	 Object[] new3 = {"7","a","c"};
	 Object[] new4 = {"9","a","c"};
	 Object[] new5 = {"4","a","c"};
	 Object[] new6 = {"5","a","c"};
	 Object[] new7 = {"3","a","c"};
	 List list = new ArrayList();
	 list.add(new1);
	 list.add(new2);
	 list.add(new3);
	 list.add(new4);
	 list.add(new5);
	 list.add(new6);
	 list.add(new7);
	 Collections.sort(list, new MyComparator());
	 for(Object o:list){
	 Object[] obs = (Object[])o ;
	 System.out.println("["+obs[0]+","+obs[1]+","+obs[2]+"]");
	 }
	}
	
	
	private class MyComparator implements Comparator{

	 public int compare(Object o1, Object o2) {
	 Object[] obs1 = (Object[])o1;
	 Object[] obs2 = (Object[])o2;
	 String str1 = obs1[0].toString();
	 String str2 = obs2[0].toString();
	 return str1.compareTo(str2);
	 }
	
	}
	
	
	public static void main(String[] args) {
	 new Test();
	}
	}

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　集合进行排序　

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