密码的自动生成器:密码由大写字母/小写字母/数字组成,生成12位随机密码
package arithmetic; import java.util.Random; public class Test04 { /** * 密码的自动生成器:密码由大写字母/小写字母/数字组成,生成12位随机密码; */ public static void main(String[] args) { char [] pardStore = new char[62]; for (int i = 0; i < 26; i++) { pardStore[i]=(char)('A'+i); } for (int i = 26; i < 52; i++) { pardStore[i]=(char)('a'+(i-26)); } for (int i = 52; i < 62; i++) { pardStore[i]=(char)('0'+(i-52)); } Random r = new Random(); for (int i = 0; i < 12; i++) { int n = r.nextInt(62); System.out.print(pardStore[n]); } } }