java字符与ASCII码互转字符转对应ASCII码
// ⽅法⼀：将char强制转换为byte
char ch = 'A';
记住我byte byteAscii = (byte) ch;
System.out.println(byteAscii);
// ⽅法⼆：将char直接转化为int，其值就是字符的ascii
int byteAscii1 = (int) ch;
System.out.println(byteAscii1);
ASCII码转字符
// 直接int强制转换为char
int ascii = 65;
char ch1 = (char)ascii;
System.out.println(ch1);