JavaAlgorithms/Conversions/HexaDecimalToBinary.java

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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);
// Presentation:
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"};
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HexaDecimalToBinary objConvert = new HexaDecimalToBinary();
for (String num : hexNums) {
objConvert.convert(num);
}
}
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}