[Java] Java中Collection、List、Set、Map之间的关系总结

package collection;
import java.util.arrays; 
import java.util.collections; 
import java.util.comparator; 
import java.util.list; 
public class masstring {
 public static void main(string args []){
 string str[] = new string[]{"zhans", "lis", "wangwt", "quliu"};
 list<string> list = arrays.aslist(str);
 string max = collections.max(list, new strsort()); // collections静态函数的使用
 system.out.println("max: "+max);
 }
}
class strsort implements comparator<string>{
<span> </span>// 一个比较器重新定义
 public int compare(string s1, string s2){
 if(s1.length() < s2.length()){
  return -1;
 }
 if(s1.length() < s2.length()){
  return s1.compareto(s2);
 }
 else return 1;
 }
}