publicclassAsciiByteConversionExample{publicstaticvoidmain(String[]args){// ASCII码转换为Java字节byteasciiByte=(byte)65;System.out.println("ASCII码为65的字符是:"+(char)asciiByte);// Java字节转换为ASCII码intasciiValue=(int)-
由于byte是一个8位的有符号整数,而ASCII码是一个0到127的7位编码标准,为了能够表示所有的ASCII码值,我们需要将byte类型的变量转换为int类型。可以使用以下代码将byte转换为int: intintValue=byteValue&0xFF; 1. 上述代码使用了位运算的技巧,将byte类型的变量转换为int类型。& 0xFF操作会将byte的符号位扩展为int...
Java中的ASCII、Unicode和UTF-8字符编码集 首先讲一下几种字符的编码方式: 1. ASCII码 我们知道,在计算机内部,所有的信息最终都表示为一个二进制的字符串。每一个二进制位(bit)有0和1两种状态,因此八个二进制位就可以组合出256种状态,这被称为一个字节(byte)。也就是说,一个字节一共可以用来表示256种不同...
*/publicstaticbyte[] hexStringToByte(String hex) {int max = hex.length() / 2;byte[] bytes =newbyte[max]; String binarys = DigitalTrans.hexStringToBinary(hex);for (int i = 0; i < max; i++) { bytes[i] = (byte) DigitalTrans.binaryToAlgorism(binarys.substring( i * 8 + 1, (...
valueOf(base.charAt(index)); g.drawString(String.valueOf(c), j, i); } lineNum++; } g.dispose(); ByteArrayOutputStream out = new ByteArrayOutputStream(); try { ImageIO.write(bufferedImage,"jpg",out); BASE64Encoder base64Encoder = new BASE64Encoder(); String base64 =base64Encoder....
getBytes()); BigInteger bigInteger = new BigInteger(1 , md5ValueByteArray); return bigInteger.toString(16).toUpperCase(); } catch (Exception e) { throw new RuntimeException(e); } } /** * 生成签名 * @param map * @return */ public String getSignToken(Map<String, String> map) { ...
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import java.nio.charset.StandardCharsets; public class Main { public static void main(String[] args) { String s = "ball"; byte[] bytes = s.getBytes(StandardCharsets.US_ASCII); System.out.println("ASCII Numeric Value of b: " + bytes[0]); System.out.println("ASCII Numeric Value of ...
arpit.java2blog; import java.nio.charset.StandardCharsets; public class CharToASCIIGetBytes { public static void main(String[] args) { String str = "Hello"; byte[] bytes = str.getBytes(StandardCharsets.US_ASCII); System.out.println("Ascii value of e is: "+bytes[1]); System.out....
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