[JAVA] Base64 encoder this and that

Once upon a time there was no standard Base64 encoder class in java. However, it was added from JDK 1.8. → What's new in JDK 8

For JDK 1.8

With JDK 1.8, don't hesitate to use java.util.Base64.

Main.java

    public static void main(String[] args) {
        byte[] buf = { 1, 2, 3 };
        java.util.Base64.Encoder e = java.util.Base64.getEncoder();
        System.out.println(e.encodeToString(buf));
    }

For JDK 1.7 or earlier

Not standard for JDK 1.7 and earlier. The following are somehow usable (used). Of these, the Commons Codec is safe.

• org.apache.axis.encoding.Base64
• org.apache.catalina.util.Base64
• org.apache.commons.codec.binary.Base64
• org.apache.xmlbeans.impl.util.Base64
• com.sun.jersey.core.util.Base64
• self made

Forbidden sun.misc.BASE64Encoder

It's been in the JDK for some time, even though it's not in the JDK. But it's not good to use.

Main.java

    public static void main(String[] args) {
        byte[] buf = { 1, 2, 3 };
        sun.misc.BASE64Encoder e = new sun.misc.BASE64Encoder();
        System.out.println(e.encode(buf));
    }

Compiling with JDK 1.4 and 1.5 gives no warning. With JDK 1.6

Main.java:6:warning:sun.misc.BASE64Encoder is a Sun-owned API that may be removed in future releases.
                sun.misc.BASE64Encoder e = new sun.misc.BASE64Encoder();
                        ^
Main.java:6:warning:sun.misc.BASE64Encoder is a Sun-owned API that may be removed in future releases.
                sun.misc.BASE64Encoder e = new sun.misc.BASE64Encoder();
                                                       ^
2 warnings

With JDK 1.7 and 1.8

Main.java:6:warning:BASE64Encoder is an internally owned API and may be removed in a future release
                sun.misc.BASE64Encoder e = new sun.misc.BASE64Encoder();
                        ^
Main.java:6:warning:BASE64Encoder is an internally owned API and may be removed in a future release
                sun.misc.BASE64Encoder e = new sun.misc.BASE64Encoder();
                                                       ^
2 warnings

I thought it would disappear in JDK 1.8, but it was still there. At the moment it can be compiled and run.