字符串和ASCII之间的转换

public class CharToAscii {

	public static void main(String[] args) {
		CharToAscii.AscToString();
		CharToAscii.StringToAsc();
		char a = '0';
		int b = 22307;
		//char类型参与四则运算的时候是转化成asciii码的, 字符‘0’的ascii码为48，要转换成int型，只需要（‘0’-48）即可
		System.out.println(a-48); 
		System.out.println((int)a); //将char型强行转制为int型得到的是Ascii码
		System.out.println((char)b);//将int型强行转制为char型得到的是字符
	}

	public static void AscToString() {  //ASCII转换为字符串
		String s = "22307 35806 24555 20048";
		String[]  chars = s.split(" ");
		for (int i = 0; i < chars.length; i++){
			System.out.println(chars[i] + " " + (char)Integer.parseInt(chars[i]));
		}
	}

	public static void StringToAsc() { //字符串转换为ASCII码
		String s = "新年快乐！";
		char[] chars = s.toCharArray();
		for (int i = 0; i < chars.length; i++){
			System.out.println(" " + chars[i] + " " + (int)chars[i] );
		}
	}

}