数组he集合中的排序问题

数组he集合中的排序问题

package  test;
import  java.util.ArrayList;
import  java.util.Arrays;
import  java.util.Collections;
import  java.util.List;
public   class  StringCompositor1 {
    @SuppressWarnings( " unchecked " )
     public   static   void  main(String[] args) {
        System.out.print( " 数组中的[数字]排序： " );
        String[] str  =  { " 3 " , " 4 " , " 1 " , " 2 " , " 6 " , " 7 " , " 5 " };
        Arrays.sort(str);
         for ( int  i = 0 ;i < str.length;i ++ ){
        System.out.print(str[i] + " , " );
        }
        
        System.out.println();
        System.out.print( " 数组中的[字符]排序： " );
        String[] str2  =  { " a " , " ce " , " b " , " bf " , " fs " , " cz " , " ac " };
        Arrays.sort(str2);
         for ( int  i = 0 ;i < str2.length;i ++ ){
        System.out.print(str2[i] + " , " );
        }
        
        System.out.println();
        System.out.print( " 集合中的[数字]排序: " );
        List list  =   new  ArrayList();
        list.add( " 6 " );
        list.add( " 5 " );
        list.add( " 3 " );
        list.add( " 1 " );
        list.add( " 4 " );
        list.add( " 2 " );
        list.add( " 7 " );
        Collections.sort(list);
         for ( int  i = 0 ;i < list.size();i ++ ){   
            System.out.print((String)list.get(i) + " , " );   
        }  
        
        
        System.out.println();
        System.out.print( " 集合中的[字符]排序: " );
        List list2  =   new  ArrayList();
        list2.add( " b " );
        list2.add( " bg " );
        list2.add( " af " );
        list2.add( " a " );
        list2.add( " ce " );
        list2.add( " cd " );
        list2.add( " q " );
        Collections.sort(list2);
         for ( int  i = 0 ;i < list2.size();i ++ ){   
            System.out.print((String)list2.get(i) + " , " );   
        }  
    }
}