Mar 9, 2010 · One more way- By using java.lang.Integer you can get string representation of the first argument i in the radix (Octal - 8, Hex - 16, Binary - 2) specified by the second argument.

Feb 15, 2013 · Adding all four updated methods and comparisons here for easier understanding. public static void binary() { // Gives magnitude in binary along with sign for negative values System.out.println(Integer.toString(-1,2)); // -1 // Give the int value of input binary representation along with sign System.out.println(Integer.parseInt(Integer.toString(-1, 2),2)); // …

Oct 8, 2020 · A Integer is a 32-bit signed data type, but Integer.toBinaryString() returns a string representation of the integer argument as an unsigned integer in base 2. So, Integer.parseInt(Integer.toBinaryString(X),2) can generate an exception (signed vs. unsigned). The safe way is to use Integer.toString(X,2); this will generate something less elegant:

binary 1011 becomes integer 11 binary 1001 becomes integer 9 binary 11 becomes integer 3 etc. What's the best way to proceed? I've been exploring java.lang.number.* without finding a direct conversion method.

This is an old trick, create a string with 16 0's then append the trimmed binary string you got from String.format("%s", Integer.toBinaryString(1)) and use the right-most 16 characters, lopping off any leading 0's. Better yet, make a function that lets …

May 22, 2014 · How to convert a binary String such as String c = "110010"; // as binary to the value in decimal in Java? (expected result in the example is 50)

Feb 21, 2015 · String binAddr = Integer.toBinaryString(Integer.parseInt(hexAddr, 16)); String.format("%032", new BigInteger(binAddr)); The idea here is to parse the string back in as a decimal number temporarily (one that just so happens to consist of …

Apr 2, 2015 · String binaryIntInStr = Integer.toBinaryString(int); If you want to get the bit count of an int, you need to do this: int count = Integer.bitCount(int); But you couldn't get the binary representation of an integer as a binary number with a fixed number of bits, for example, 7 has 3 bits, but you can't set its bit count 2 or 1. Because you won't ...

Apr 21, 2022 · Prior to Java 7, you can use an online tool or your favorite calculator to convert binary to one of the notations recognized by old Java versions (octal, decimal, or hexadecimal). If another radix is used, a descriptive comment containing the binary representation can be placed at the declaration to clarify the value for readers. –

Sep 7, 2012 · @Sean: a) happens because a byte in Java is an 8-bit signed two's complement integer. Its minimum value is -128 (2^8), and its maximum value is 127; b) You can easily fix that by using this String.format("%8s", Integer.toBinaryString(b)).replace(' ', '0') to left pad the resulting string with zeros. –