我试图显示随机图片基于随机()方法的一代(只是想尝试像captcha)。我从数组中生成随机数,但不知道如何映射这些不与图像。有任何想法吗 ?我到目前为止所做的:使用java显示随机图片
import java.util.Arrays; import java.util.Random;
公共类Gen_Captcha {
static String[] myCaptchaLetters = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","0","1","2","3","4","5","6","7","8","9"};
Gen_Captcha captcha= new Gen_Captcha();
public static void main(String[] args) {
Random randomGenerator = new Random();
for(int i=0;i<5;i++){
int random = randomGenerator.nextInt(62);
System.out.print((myCaptchaLetters[random]));
}
}
}
}
注:上述代码不包括在摆动框架代码以显示图像。
好的谢谢。我会尝试使用hashmap –