[SOLVED] The compiler seems to be confusing two versions of an overloaded method. Why?

The compiler seems to be confusing two versions of an overloaded method. Why?

In my jsp file there is a line:

byte[] imageData = Base64.decodeBase64(request.getParameter("imageBase64"));

and eclipse complains:

The method decodeBase64(byte[]) in the type Base64 is not applicable for the arguments (String)"

It says that the method gets a String, but it expects a byte[]. But in the Base64 class there are two overloaded versions of decodeBase64; one with argument String, and one with argument byte[].

I fail to see why the compiler seems to think I am calling the byte[]version with an incorrect String argument, where it should have used the String version without any compiler error.

Solution

Base64 class in package org.apache.commons.codec.binary has 2 decode methods

static byte[]   decodeBase64(byte[] base64Data) since beginning

static byte[]   decodeBase64(String base64String) since version 1.4.

I think you must be having jar prior to commons codec 1.4 in your classpath

Hope it helps.