34 lines
1.2 KiB
Java
34 lines
1.2 KiB
Java
package Conversions;
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// hex = [0 - 9] -> [A - F]
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class DecimalToHexaDecimal {
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private static final int sizeOfIntInHalfBytes = 8;
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private static final int numberOfBitsInAHalfByte = 4;
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private static final int halfByte = 0x0F;
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private static final char[] hexDigits = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
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};
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// Returns the hex value of the dec entered in the parameter.
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public static String decToHex(int dec) {
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StringBuilder hexBuilder = new StringBuilder(sizeOfIntInHalfBytes);
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hexBuilder.setLength(sizeOfIntInHalfBytes);
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for (int i = sizeOfIntInHalfBytes - 1; i >= 0; --i) {
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int j = dec & halfByte;
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hexBuilder.setCharAt(i, hexDigits[j]);
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dec >>= numberOfBitsInAHalfByte;
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}
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return hexBuilder.toString().toLowerCase();
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}
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// Test above function.
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public static void main(String[] args) {
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System.out.println("Test...");
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int dec = 305445566;
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String libraryDecToHex = Integer.toHexString(dec);
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String decToHex = decToHex(dec);
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System.out.println("Result from the library : " + libraryDecToHex);
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System.out.println("Result decToHex method : " + decToHex);
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}
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}
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