This is in java. Create, test, and document a Java class using the adapter pattern to implement the following interface.

k * * A PushbackableTokenizer allows the user to read * a token and push it back to the stream * from which the token was read. Tokens are * assumed to be separated by white space * Any number of tokens may be pushed back. * Qauthor BrahmaDathan public interface PushbackableTokenizer [ k x * Returns the next tokern * Qreturn the next tokern public String nextToken); k * * Returns true if and only if there are more tokens * Oreturn true if there is at least one more token; else false public boolean hasMoreTokens); k * * The last token read and is not pushed back * is pushed back, so it can be read again using nextToken. public void pushback()