简易点名系统

/*
     简易点名系统
*/
import java.util.Random;

public class callNames {
    public static void main(String[] args) {
        
        String [] students=new String [7];
        addNames(students);
        showNames(students);
        String name=randomNames(students);
        System.out.println(name);
        
    }
    //添加名字
    public static void addNames(String[] names){
        
         names[0]="a";
          names[1]="b";
           names[2]="c";
            names[3]="d";
             names[4]="e";
              names[5]="f";
               names[6]="g";
    }
    //遍历打印
    public static void showNames(String [] names){
        for(int i=0;i<names.length-1;i++){
                System.out.print(names[i]+" ");
        } 
        System.out.println();
    }
    //随机点名
    public static String randomNames(String[] names){
        Random random=new Random();
        int index=random.nextInt(names.length);
        return names[index];
    }
}