Java中ASC碼與字符互相轉化

package com.ljq.test;

/**
 * Java中ASC碼與字符互相轉化
 * 
 * @author jiqinlin
 * 
 */
public class ASCTest {
    private static int ascNum;
    private static char strChar;

    public static void main(String[] args) {
        System.out.println(getAsc("a"));
        System.out.println(backchar(98));
    }

    /**
     * 字符轉ASC
     * 
     * @param st
     * @return
     */
    public static int getAsc(String st) {
        byte[] gc = st.getBytes();
        ascNum = (int) gc[0];
        return ascNum;
    }

    /**
     * ASC轉字符
     * 
     * @param backnum
     * @return
     */
    public static char backchar(int backnum) {
        strChar = (char) backnum;
        return strChar;
    }

}