java字符串 与 ASCII码相互转换

public class stringToAscii {
public static void main(String[] args) {
System.out.println("a="+stringToAscii("a"));
System.out.println("z="+stringToAscii("z"));
System.out.println("A="+stringToAscii("A"));
System.out.println("Z="+stringToAscii("Z"));
System.out.println("0="+stringToAscii("0"));
System.out.println("9="+stringToAscii("9"));
}
/**
     * 字符串转换为Ascii
     * @param value
     * @return
     */
    public static String stringToAscii(String value) 
    { 
        StringBuffer sbu = new StringBuffer(); 
        char[] chars = value.toCharArray();  
        for (int i = 0; i < chars.length; i++) { 
            if(i != chars.length - 1) 
            { 
                sbu.append((int)chars[i]).append(","); 
            } 
            else { 
                sbu.append((int)chars[i]); 
            } 
        } 
        return sbu.toString();
    }
   
    /**
     * Ascii转换为字符串
     * @param value
     * @return
     */
    public static String asciiToString(String value)
    {
        StringBuffer sbu = new StringBuffer();
        String[] chars = value.split(",");
        for (int i = 0; i < chars.length; i++) {
            sbu.append((char) Integer.parseInt(chars[i]));
        }
        return sbu.toString();
    }
}

ASCII码表
https://blog.csdn.net/xiaokui_wingfly/article/details/49228459