package com.anyun.exam.lib.util;
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public class ByteUtil {
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public static String byte2hex(byte [] buffer){
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StringBuilder h = new StringBuilder();
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for(int i = 0; i < buffer.length; i++){
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String temp = Integer.toHexString(buffer[i] & 0xFF).toUpperCase();
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if(temp.length() == 1){
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temp = "0" + temp;
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}
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h.append(temp);
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h.append(" ");
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}
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return h.toString();
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}
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public static String byte2hex(byte [] buffer, int length) {
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byte [] temp = new byte[length];
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System.arraycopy(buffer, 0, temp, 0, length);
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return byte2hex(temp);
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}
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public static boolean allIsAscii(byte []buffer) {
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for (int i = 0; i < buffer.length; i++) {
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if (buffer[i] < 0x20 || buffer[i] >= 0x7F) {
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return false;
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}
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}
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return true;
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}
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}
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