change string into binary uding java
package com.mkyong.crypto.bytes; import java.util.ArrayList; import java.util.List; import java.util.stream.Collectors; public class StringToBinaryExample1 { public static void main(String[] args) { String input = "Hello"; String result = convertStringToBinary(input); System.out.println(result); // pretty print the binary format System.out.println(prettyBinary(result, 8, " ")); } public static String convertStringToBinary(String input) { StringBuilder result = new StringBuilder(); char[] chars = input.toCharArray(); for (char aChar : chars) { result.append( String.format("%8s", Integer.toBinaryString(aChar)) // char -> int, auto-cast .replaceAll(" ", "0") // zero pads ); } return result.toString(); } public static String prettyBinary(String binary, int blockSize, String separator) { List<String> result = new ArrayList<>(); int index = 0; while (index < binary.length()) { result.add(binary.substring(index, Math.min(index + blockSize, binary.length()))); index += blockSize; } return result.stream().collect(Collectors.joining(separator)); } }
