CODEWITHSUNDEEP
javastringbinarychar
tugcem
tugcem

Reputation: 1108

Convert String / char into specified-digit binary string and vice versa in java

I'm trying to convert a string (or a single char) into given number of digits binary string in java. Assume that given number is 5, so a string "zx~q" becomes 01101, 10110, 11011, 10011 (I' ve made up the binaries). However, I need to revert these binaries into "abcd" again. If given number changes, the digits (so the binaries) will change.

Anyone has an idea?

PS: Integer.toBinaryString() changes into an 8-digit binary array.

Upvotes: 1

Views: 12432

Answers (2)

Ajay S
Ajay S

Reputation: 48602

You can achieve like this.

To convert abcd to 1010101111001101,

class Demo {
    public static void main(String args[]) {  
        String str = "abcd";
        for(int i = 0; i < str.length(); i++) {
            int number = Integer.parseInt(String.valueOf(str.charAt(i)), 16);
            String binary = Integer.toBinaryString(number);
            System.out.print(binary);
        }
    }
}

To convert the 1010101111001101 to abcd

String str = "1010101111001101";
String binary = Long.toHexString(Long.parseLong(str,2));
System.out.print(binary);

Upvotes: 0

SirPentor
SirPentor

Reputation: 2044

Looks like Integer.toString(int i, int radix) and Integer.parseInt(string s, int radix) would do the trick.

Upvotes: 2

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