Java

MIME Header Q and B Encoding and Decoding

See more Encryption Examples

Demonstrates how to Q and B encode/decode. Chilkat2 Java

import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();

        sb.append("This is a test");

        System.out.println(sb.getEncoded("B", "utf-8"));
        // output is:
        // =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

        System.out.println(sb.getEncoded("Q", "iso-8859-1"));
        // output is:
        // =?utf-8?Q?This_is_a_test?=

        StringBuilder sb2 = new StringBuilder();

        sb2.append("=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=");
        sb2.decode("B", "utf-8");
        System.out.println(sb2.getAsString());

        // output is:
        // This is a test

        sb2.clear();
        sb2.append("=?utf-8?Q?This_is_a_test?=");
        sb2.decode("Q", "utf-8");
        System.out.println(sb2.getAsString());

        // output is:
        // This is a test

        // "B" or "Q" will decode both B and Q.
        sb2.clear();
        sb2.append("=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=");
        sb2.decode("Q", "utf-8");
        System.out.println(sb2.getAsString());

        // output is:
        // This is a test 123 This is a test
    }
}