Java中的Asc码与字符互相转化

package com.test;
public class Jm1 {
private static int asnum;
private static char stchar;
public static void main(String[] args) {
System.out.println(getAsc("A"));
System.out.println(backchar(99));
}
/**
* 字符转ASC
*
* @param st
* @return
*/
public static int getAsc(String st) {
byte[] gc = st.getBytes();
asnum = (int) gc[0];
return asnum;
}
/**
* ASC转字符
*
* @param backnum
* @return
*/
public static char backchar(int backnum) {
stchar = (char) backnum;
return stchar;
}
}