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- import java.lang.StringBuilder;
- class Test {
- private static final int sizeOfIntInHalfBytes = 8;
- private static final int numberOfBitsInAHalfByte = 4;
- private static final int halfByte = 0x0F;
- private static final char[] hexDigits = {
- '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
- };
- public static String decToHex(int dec) {
- StringBuilder hexBuilder = new StringBuilder(sizeOfIntInHalfBytes);
- hexBuilder.setLength(sizeOfIntInHalfBytes);
- for (int i = sizeOfIntInHalfBytes - 1; i >= 0; --i)
- {
- int j = dec & halfByte;
- hexBuilder.setCharAt(i, hexDigits[j]);
- dec >>= numberOfBitsInAHalfByte;
- }
- return hexBuilder.toString();
- }
- public static void main(String[] args) {
- int dec = 305445566;
- String hex = decToHex(dec);
- System.out.println(hex);
- }
- }
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