Java Convert HexaDecimal to Binary

In this source code example, we will write a Java program that converts any HexaDecimal number to a Binary number.
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Java Convert Hexadecimal to Binary

This class converts HexaDecimal number to a Binary number:
package net.sourcecodeexamples.java.Conversions; //Hex [0-9],[A-F] -> Binary [0,1] /**  * This class converts Decimal numbers to Octal Numbers  * @author sourcecodeexamples.net  *  */ public class HexaDecimalToBinary { private final int LONG_BITS = 8; public void convert(String numHex) { // String a HexaDecimal: int conHex = Integer.parseInt(numHex, 16); // Hex a Binary: String binary = Integer.toBinaryString(conHex); // Output: System.out.println(numHex + " = " + completeDigits(binary)); } public String completeDigits(String binNum) { for (int i = binNum.length(); i < LONG_BITS; i++) { binNum = "0" + binNum; } return binNum; } public static void main(String[] args) { //Testing Numbers: String[] hexNums = { "1", "A1", "ef", "BA", "AA", "BB", "19", "01", "02", "03", "04" }; HexaDecimalToBinary objConvert = new HexaDecimalToBinary(); for (String num: hexNums) { objConvert.convert(num); } } }

Output

1 = 00000001 A1 = 10100001 ef = 11101111 BA = 10111010 AA = 10101010 BB = 10111011 19 = 00011001 01 = 00000001 02 = 00000010 03 = 00000011 04 = 00000100
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