import java.util.Random;
public class demo1{
public static void main(String[] args) {
char chs[]=new char[52];
for(int i=0;i<chs.length;i++) {
if(i<=25) {
chs[i]=(char)(97+i);
}
else {
chs[i]=(char)(65+i-26);
}
}
String result="";
Random r=new Random();
for(int i=0;i<4;i++) {
int randomindex=r.nextInt(chs.length);
result=result+chs[randomindex];
}
int number=r.nextInt(10);
result=result+number;
System.out.println(result);
}
}
MySQL打开后无法运行如何解决
2024-05-16 05:56:05 41 阅读