verification Code

import java.util.Random;


/**
 * verrification Code
 * @author TJX
 * @version 20121025
 */
public class Code {
  static Random  rd=new Random();
  public static void main(String[] args){
      numCode();
      charCode();
      chineseCode();
      mixCode();
  }
  public static void numCode(){
      System.out.println("获取的五位数字验证码：");
      for(int i=0;i<5;i++){
          int n=rd.nextInt(10);
          System.out.print(n+" ");
      }
      System.out.println();
  }
  public static void charCode(){
      System.out.println("\n获取的五位字符验证码：");
      for(int i=0;i<5;i++){
          int n=65+rd.nextInt(58);
          System.out.print((char)n+" ");
      }
      System.out.println();
  }
  public static void chineseCode(){
      System.out.println("\n获取五位汉字验证码：");
      for(int i=0;i<5;i++){
          int n=20000+rd.nextInt(10000);
          System.out.print((char)n+" ");
      }
      System.out.println();
  }
  public static void mixCode(){
      System.out.println("\n获取五位混合验证码：");
      for(int i=0;i<5;i++){
          int n=rd.nextInt(123);
          if(n<65){
              System.out.print(n%10+" ");
          }
          else{
              System.out.print((char)n+" ");
          }
      }
  }
}