Javadoc fixes for Java 8. Replace "<tt>Foo</tt>" with "{@code Foo}".

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1603933 13f79535-47bb-0310-9956-ffa450edef68

httpclient/src/main/java-deprecated/org/apache/http/impl/auth/NegotiateScheme.java

@@ -170,7 +170,7 @@ public class NegotiateScheme extends GGSSchemeBase {
      * Returns the authentication parameter with the given name, if available.
      *
      * <p>There are no valid parameters for Negotiate authentication so this
-     * method always returns <tt>null</tt>.</p>
+     * method always returns {@code null}.</p>
      *
      * @param name The name of the parameter to be returned
      *
@@ -192,10 +192,10 @@ public class NegotiateScheme extends GGSSchemeBase {
     }
 
     /**
-     * Returns <tt>true</tt>.
+     * Returns {@code true}.
      * Negotiate authentication scheme is connection based.
      *
-     * @return <tt>true</tt>.
+     * @return {@code true}.
      */
     public boolean isConnectionBased() {
         return true;

httpclient/src/main/java/org/apache/http/auth/AuthScheme.java

@@ -95,7 +95,7 @@ public interface AuthScheme {
      * Tests if the authentication scheme is provides authorization on a per
      * connection basis instead of usual per request basis
      *
-     * @return <tt>true</tt> if the scheme is connection based, <tt>false</tt>
+     * @return {@code true</tt> if the scheme is connection based, <tt>false}
      * if the scheme is request based.
      */
     boolean isConnectionBased();
@@ -106,8 +106,8 @@ public interface AuthScheme {
      * successfully or unsuccessfully, that is, all the required authorization
      * challenges have been processed in their entirety.
      *
-     * @return <tt>true</tt> if the authentication process has been completed,
+     * @return {@code true} if the authentication process has been completed,
-     * <tt>false</tt> otherwise.
+     * {@code false} otherwise.
      */
     boolean isComplete();
 

httpclient/src/main/java/org/apache/http/auth/AuthScope.java

@@ -34,7 +34,7 @@ import org.apache.http.util.Args;
 import org.apache.http.util.LangUtils;
 
 /**
- * <tt>AuthScope</tt> represents an authentication scope consisting of a host name,
+ * {@code AuthScope} represents an authentication scope consisting of a host name,
  * a port number, a realm name and an authentication scheme name.
  * <p/>
  * This class can also optionally contain a host of origin, if created in response
@@ -46,23 +46,23 @@ import org.apache.http.util.LangUtils;
 public class AuthScope {
 
     /**
-     * The <tt>null</tt> value represents any host. In the future versions of
+     * The {@code null} value represents any host. In the future versions of
      * HttpClient the use of this parameter will be discontinued.
      */
     public static final String ANY_HOST = null;
 
     /**
-     * The <tt>-1</tt> value represents any port.
+     * The {@code -1} value represents any port.
      */
     public static final int ANY_PORT = -1;
 
     /**
-     * The <tt>null</tt> value represents any realm.
+     * The {@code null} value represents any realm.
      */
     public static final String ANY_REALM = null;
 
     /**
-     * The <tt>null</tt> value represents any authentication scheme.
+     * The {@code null} value represents any authentication scheme.
      */
     public static final String ANY_SCHEME = null;
 
@@ -89,8 +89,8 @@ public class AuthScope {
     private final HttpHost origin;
 
     /**
-     * Defines auth scope with the given <tt>host</tt>, <tt>port</tt>, <tt>realm</tt>, and
+     * Defines auth scope with the given {@code host</tt>, <tt>port</tt>, <tt>realm}, and
-     * <tt>authentication scheme</tt>.
+     * {@code authentication scheme}.
      *
      * @param host authentication host. May be {@link #ANY_HOST} if applies
      *   to any host.
@@ -148,7 +148,7 @@ public class AuthScope {
     }
 
     /**
-     * Defines auth scope with the given <tt>host</tt>, <tt>port</tt> and <tt>realm</tt>.
+     * Defines auth scope with the given {@code host</tt>, <tt>port</tt> and <tt>realm}.
      *
      * @param host authentication host. May be {@link #ANY_HOST} if applies
      *   to any host.
@@ -162,7 +162,7 @@ public class AuthScope {
     }
 
     /**
-     * Defines auth scope with the given <tt>host</tt> and <tt>port</tt>.
+     * Defines auth scope with the given {@code host</tt> and <tt>port}.
      *
      * @param host authentication host. May be {@link #ANY_HOST} if applies
      *   to any host.

httpclient/src/main/java/org/apache/http/auth/AuthenticationException.java

@@ -41,7 +41,7 @@ public class AuthenticationException extends ProtocolException {
     private static final long serialVersionUID = -6794031905674764776L;
 
     /**
-     * Creates a new AuthenticationException with a <tt>null</tt> detail message.
+     * Creates a new AuthenticationException with a {@code null} detail message.
      */
     public AuthenticationException() {
         super();
@@ -60,8 +60,8 @@ public class AuthenticationException extends ProtocolException {
      * Creates a new AuthenticationException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public AuthenticationException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/auth/InvalidCredentialsException.java

@@ -41,7 +41,7 @@ public class InvalidCredentialsException extends AuthenticationException {
     private static final long serialVersionUID = -4834003835215460648L;
 
     /**
-     * Creates a new InvalidCredentialsException with a <tt>null</tt> detail message.
+     * Creates a new InvalidCredentialsException with a {@code null} detail message.
      */
     public InvalidCredentialsException() {
         super();
@@ -60,8 +60,8 @@ public class InvalidCredentialsException extends AuthenticationException {
      * Creates a new InvalidCredentialsException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public InvalidCredentialsException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/auth/MalformedChallengeException.java

@@ -42,7 +42,7 @@ public class MalformedChallengeException extends ProtocolException {
     private static final long serialVersionUID = 814586927989932284L;
 
     /**
-     * Creates a new MalformedChallengeException with a <tt>null</tt> detail message.
+     * Creates a new MalformedChallengeException with a {@code null} detail message.
      */
     public MalformedChallengeException() {
         super();
@@ -61,8 +61,8 @@ public class MalformedChallengeException extends ProtocolException {
      * Creates a new MalformedChallengeException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public MalformedChallengeException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/client/CircularRedirectException.java

@@ -40,7 +40,7 @@ public class CircularRedirectException extends RedirectException {
     private static final long serialVersionUID = 6830063487001091803L;
 
     /**
-     * Creates a new CircularRedirectException with a <tt>null</tt> detail message.
+     * Creates a new CircularRedirectException with a {@code null} detail message.
      */
     public CircularRedirectException() {
         super();
@@ -59,8 +59,8 @@ public class CircularRedirectException extends RedirectException {
      * Creates a new CircularRedirectException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public CircularRedirectException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/client/NonRepeatableRequestException.java

@@ -42,7 +42,7 @@ public class NonRepeatableRequestException extends ProtocolException {
     private static final long serialVersionUID = 82685265288806048L;
 
     /**
-     * Creates a new NonRepeatableEntityException with a <tt>null</tt> detail message.
+     * Creates a new NonRepeatableEntityException with a {@code null} detail message.
      */
     public NonRepeatableRequestException() {
         super();

httpclient/src/main/java/org/apache/http/client/RedirectException.java

@@ -41,7 +41,7 @@ public class RedirectException extends ProtocolException {
     private static final long serialVersionUID = 4418824536372559326L;
 
     /**
-     * Creates a new RedirectException with a <tt>null</tt> detail message.
+     * Creates a new RedirectException with a {@code null} detail message.
      */
     public RedirectException() {
         super();
@@ -60,8 +60,8 @@ public class RedirectException extends ProtocolException {
      * Creates a new RedirectException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public RedirectException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/client/protocol/ResponseContentEncoding.java

@@ -92,7 +92,7 @@ public class ResponseContentEncoding implements HttpResponseInterceptor {
     }
 
     /**
-     * Handles <tt>gzip</tt> and <tt>deflate</tt> compressed entities by using the following
+     * Handles {@code gzip</tt> and <tt>deflate} compressed entities by using the following
      * decoders:
      * <ul>
      * <li>gzip - see {@link GZIPInputStream}</li>

httpclient/src/main/java/org/apache/http/conn/ConnectTimeoutException.java

@@ -50,7 +50,7 @@ public class ConnectTimeoutException extends InterruptedIOException {
     private final HttpHost host;
 
     /**
-     * Creates a ConnectTimeoutException with a <tt>null</tt> detail message.
+     * Creates a ConnectTimeoutException with a {@code null} detail message.
      */
     public ConnectTimeoutException() {
         super();

httpclient/src/main/java/org/apache/http/conn/ConnectionPoolTimeoutException.java

@@ -42,7 +42,7 @@ public class ConnectionPoolTimeoutException extends ConnectTimeoutException {
     private static final long serialVersionUID = -7898874842020245128L;
 
     /**
-     * Creates a ConnectTimeoutException with a <tt>null</tt> detail message.
+     * Creates a ConnectTimeoutException with a {@code null} detail message.
      */
     public ConnectionPoolTimeoutException() {
         super();

httpclient/src/main/java/org/apache/http/cookie/ClientCookie.java

@@ -31,10 +31,10 @@ package org.apache.http.cookie;
  * ClientCookie extends the standard {@link Cookie} interface with
  * additional client specific functionality such ability to retrieve
  * original cookie attributes exactly as they were specified by the
- * origin server. This is important for generating the <tt>Cookie</tt>
+ * origin server. This is important for generating the {@code Cookie}
  * header because some cookie specifications require that the
- * <tt>Cookie</tt> header should include certain attributes only if
+ * {@code Cookie} header should include certain attributes only if
- * they were specified in the <tt>Set-Cookie</tt> header.
+ * they were specified in the {@code Set-Cookie} header.
  *
  *
  * @since 4.0

httpclient/src/main/java/org/apache/http/cookie/Cookie.java

@@ -55,7 +55,7 @@ public interface Cookie {
 
     /**
      * Returns the comment describing the purpose of this cookie, or
-     * <tt>null</tt> if no such comment has been defined.
+     * {@code null} if no such comment has been defined.
      *
      * @return comment
      */
@@ -68,21 +68,21 @@ public interface Cookie {
     String getCommentURL();
 
     /**
-     * Returns the expiration {@link Date} of the cookie, or <tt>null</tt>
+     * Returns the expiration {@link Date} of the cookie, or {@code null}
      * if none exists.
      * <p><strong>Note:</strong> the object returned by this method is
      * considered immutable. Changing it (e.g. using setTime()) could result
      * in undefined behaviour. Do so at your peril. </p>
-     * @return Expiration {@link Date}, or <tt>null</tt>.
+     * @return Expiration {@link Date}, or {@code null}.
      */
     Date getExpiryDate();
 
     /**
-     * Returns <tt>false</tt> if the cookie should be discarded at the end
+     * Returns {@code false} if the cookie should be discarded at the end
-     * of the "session"; <tt>true</tt> otherwise.
+     * of the "session"; {@code true} otherwise.
      *
-     * @return <tt>false</tt> if the cookie should be discarded at the end
+     * @return {@code false} if the cookie should be discarded at the end
-     *         of the "session"; <tt>true</tt> otherwise
+     *         of the "session"; {@code true} otherwise
      */
     boolean isPersistent();
 
@@ -129,7 +129,7 @@ public interface Cookie {
      * Returns true if this cookie has expired.
      * @param date Current time
      *
-     * @return <tt>true</tt> if the cookie has expired.
+     * @return {@code true} if the cookie has expired.
      */
     boolean isExpired(final Date date);
 

httpclient/src/main/java/org/apache/http/cookie/CookieAttributeHandler.java

@@ -66,7 +66,7 @@ public interface CookieAttributeHandler {
    *
    * @param cookie {@link org.apache.http.cookie.Cookie} to match
    * @param origin the cookie source to match against
-   * @return <tt>true</tt> if the match is successful; <tt>false</tt> otherwise
+   * @return {@code true</tt> if the match is successful; <tt>false} otherwise
    */
   boolean match(Cookie cookie, CookieOrigin origin);
 

httpclient/src/main/java/org/apache/http/cookie/CookiePathComparator.java

@@ -34,7 +34,7 @@ import org.apache.http.annotation.Immutable;
 
 /**
  * This cookie comparator ensures that multiple cookies satisfying
- * a common criteria are ordered in the <tt>Cookie</tt> header such
+ * a common criteria are ordered in the {@code Cookie} header such
  * that those with more specific Path attributes precede those with
  * less specific.
  *

httpclient/src/main/java/org/apache/http/cookie/CookieRestrictionViolationException.java

@@ -41,7 +41,7 @@ public class CookieRestrictionViolationException extends MalformedCookieExceptio
     private static final long serialVersionUID = 7371235577078589013L;
 
     /**
-     * Creates a new CookeFormatViolationException with a <tt>null</tt> detail
+     * Creates a new CookeFormatViolationException with a {@code null} detail
      * message.
      */
     public CookieRestrictionViolationException() {

httpclient/src/main/java/org/apache/http/cookie/CookieSpec.java

@@ -55,16 +55,16 @@ public interface CookieSpec {
     int getVersion();
 
     /**
-      * Parse the <tt>"Set-Cookie"</tt> Header into an array of Cookies.
+      * Parse the {@code "Set-Cookie"} Header into an array of Cookies.
       *
       * <p>This method will not perform the validation of the resultant
       * {@link Cookie}s</p>
       *
       * @see #validate
       *
-      * @param header the <tt>Set-Cookie</tt> received from the server
+      * @param header the {@code Set-Cookie} received from the server
       * @param origin details of the cookie origin
-      * @return an array of <tt>Cookie</tt>s parsed from the header
+      * @return an array of {@code Cookie}s parsed from the header
       * @throws MalformedCookieException if an exception occurs during parsing
       */
     List<Cookie> parse(Header header, CookieOrigin origin) throws MalformedCookieException;
@@ -85,13 +85,13 @@ public interface CookieSpec {
      * @param cookie the Cookie to be matched
      * @param origin the target to test against
      *
-     * @return <tt>true</tt> if the cookie should be submitted with a request
+     * @return {@code true} if the cookie should be submitted with a request
-     *  with given attributes, <tt>false</tt> otherwise.
+     *  with given attributes, {@code false} otherwise.
      */
     boolean match(Cookie cookie, CookieOrigin origin);
 
     /**
-     * Create <tt>"Cookie"</tt> headers for an array of Cookies.
+     * Create {@code "Cookie"} headers for an array of Cookies.
      *
      * @param cookies the Cookies format into a Cookie header
      * @return a Header for the given Cookies.
@@ -102,7 +102,7 @@ public interface CookieSpec {
     /**
      * Returns a request header identifying what version of the state management
      * specification is understood. May be <code>null</code> if the cookie
-     * specification does not support <tt>Cookie2</tt> header.
+     * specification does not support {@code Cookie2} header.
      */
     Header getVersionHeader();
 

httpclient/src/main/java/org/apache/http/cookie/MalformedCookieException.java

@@ -43,7 +43,7 @@ public class MalformedCookieException extends ProtocolException {
     private static final long serialVersionUID = -6695462944287282185L;
 
     /**
-     * Creates a new MalformedCookieException with a <tt>null</tt> detail message.
+     * Creates a new MalformedCookieException with a {@code null} detail message.
      */
     public MalformedCookieException() {
         super();
@@ -62,8 +62,8 @@ public class MalformedCookieException extends ProtocolException {
      * Creates a new MalformedCookieException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public MalformedCookieException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/cookie/SetCookie.java

@@ -84,7 +84,7 @@ public interface SetCookie extends Cookie {
     /**
      * Sets the secure attribute of the cookie.
      * <p>
-     * When <tt>true</tt> the cookie should only be sent
+     * When {@code true} the cookie should only be sent
      * using a secure protocol (https).  This should only be set when
      * the cookie's originating server used a secure protocol to set the
      * cookie's value.

httpclient/src/main/java/org/apache/http/cookie/SetCookie2.java

@@ -50,7 +50,7 @@ public interface SetCookie2 extends SetCookie {
     /**
      * Set the Discard attribute.
      *
-     * Note: <tt>Discard</tt> attribute overrides <tt>Max-age</tt>.
+     * Note: {@code Discard</tt> attribute overrides <tt>Max-age}.
      *
      * @see #isPersistent()
      */

httpclient/src/main/java/org/apache/http/impl/auth/AuthSchemeBase.java

@@ -59,7 +59,7 @@ public abstract class AuthSchemeBase implements ContextAwareAuthScheme {
     private ChallengeState challengeState;
 
     /**
-     * Creates an instance of <tt>AuthSchemeBase</tt> with the given challenge
+     * Creates an instance of {@code AuthSchemeBase} with the given challenge
      * state.
      *
      * @since 4.2

httpclient/src/main/java/org/apache/http/impl/auth/BasicScheme.java

@@ -67,7 +67,7 @@ public class BasicScheme extends RFC2617Scheme {
     }
 
     /**
-     * Creates an instance of <tt>BasicScheme</tt> with the given challenge
+     * Creates an instance of {@code BasicScheme} with the given challenge
      * state.
      *
      * @since 4.2
@@ -111,8 +111,8 @@ public class BasicScheme extends RFC2617Scheme {
     /**
      * Tests if the Basic authentication process has been completed.
      *
-     * @return <tt>true</tt> if Basic authorization has been processed,
+     * @return {@code true} if Basic authorization has been processed,
-     *   <tt>false</tt> otherwise.
+     *   {@code false} otherwise.
      */
     @Override
     public boolean isComplete() {
@@ -120,9 +120,9 @@ public class BasicScheme extends RFC2617Scheme {
     }
 
     /**
-     * Returns <tt>false</tt>. Basic authentication scheme is request based.
+     * Returns {@code false}. Basic authentication scheme is request based.
      *
-     * @return <tt>false</tt>.
+     * @return {@code false}.
      */
     @Override
     public boolean isConnectionBased() {
@@ -182,7 +182,7 @@ public class BasicScheme extends RFC2617Scheme {
     }
 
     /**
-     * Returns a basic <tt>Authorization</tt> header value for the given
+     * Returns a basic {@code Authorization} header value for the given
      * {@link Credentials} and charset.
      *
      * @param credentials The credentials to encode.

httpclient/src/main/java/org/apache/http/impl/auth/DigestScheme.java

@@ -110,7 +110,7 @@ public class DigestScheme extends RFC2617Scheme {
     }
 
     /**
-     * Creates an instance of <tt>DigestScheme</tt> with the given challenge
+     * Creates an instance of {@code DigestScheme} with the given challenge
      * state.
      *
      * @since 4.2
@@ -144,8 +144,8 @@ public class DigestScheme extends RFC2617Scheme {
     /**
      * Tests if the Digest authentication process has been completed.
      *
-     * @return <tt>true</tt> if Digest authorization has been processed,
+     * @return {@code true} if Digest authorization has been processed,
-     *   <tt>false</tt> otherwise.
+     *   {@code false} otherwise.
      */
     @Override
     public boolean isComplete() {
@@ -168,9 +168,9 @@ public class DigestScheme extends RFC2617Scheme {
     }
 
     /**
-     * Returns <tt>false</tt>. Digest authentication scheme is request based.
+     * Returns {@code false}. Digest authentication scheme is request based.
      *
-     * @return <tt>false</tt>.
+     * @return {@code false}.
      */
     @Override
     public boolean isConnectionBased() {

httpclient/src/main/java/org/apache/http/impl/auth/KerberosScheme.java

@@ -108,9 +108,9 @@ public class KerberosScheme extends GGSSchemeBase {
     }
 
     /**
-     * Returns <tt>true</tt>. KERBEROS authentication scheme is connection based.
+     * Returns {@code true}. KERBEROS authentication scheme is connection based.
      *
-     * @return <tt>true</tt>.
+     * @return {@code true}.
      */
     @Override
     public boolean isConnectionBased() {

httpclient/src/main/java/org/apache/http/impl/auth/NTLMEngineException.java

@@ -57,8 +57,8 @@ public class NTLMEngineException extends AuthenticationException {
      * Creates a new NTLMEngineException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public NTLMEngineException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/impl/auth/RFC2617Scheme.java

@@ -66,7 +66,7 @@ public abstract class RFC2617Scheme extends AuthSchemeBase implements Serializab
     private transient Charset credentialsCharset;
 
     /**
-     * Creates an instance of <tt>RFC2617Scheme</tt> with the given challenge
+     * Creates an instance of {@code RFC2617Scheme} with the given challenge
      * state.
      *
      * @since 4.2

httpclient/src/main/java/org/apache/http/impl/auth/SPNegoScheme.java

@@ -109,9 +109,9 @@ public class SPNegoScheme extends GGSSchemeBase {
     }
 
     /**
-     * Returns <tt>true</tt>. SPNEGO authentication scheme is connection based.
+     * Returns {@code true}. SPNEGO authentication scheme is connection based.
      *
-     * @return <tt>true</tt>.
+     * @return {@code true}.
      */
     @Override
     public boolean isConnectionBased() {

httpclient/src/main/java/org/apache/http/impl/auth/UnsupportedDigestAlgorithmException.java

@@ -41,7 +41,7 @@ public class UnsupportedDigestAlgorithmException extends RuntimeException {
     private static final long serialVersionUID = 319558534317118022L;
 
     /**
-     * Creates a new UnsupportedAuthAlgoritmException with a <tt>null</tt> detail message.
+     * Creates a new UnsupportedAuthAlgoritmException with a {@code null} detail message.
      */
     public UnsupportedDigestAlgorithmException() {
         super();
@@ -60,8 +60,8 @@ public class UnsupportedDigestAlgorithmException extends RuntimeException {
      * Creates a new UnsupportedAuthAlgoritmException with the specified detail message and cause.
      *
      * @param message the exception detail message
-     * @param cause the <tt>Throwable</tt> that caused this exception, or <tt>null</tt>
+     * @param cause the {@code Throwable</tt> that caused this exception, or <tt>null}
-     * if the cause is unavailable, unknown, or not a <tt>Throwable</tt>
+     * if the cause is unavailable, unknown, or not a {@code Throwable}
      */
     public UnsupportedDigestAlgorithmException(final String message, final Throwable cause) {
         super(message, cause);

httpclient/src/main/java/org/apache/http/impl/client/DefaultRedirectStrategy.java

@@ -58,8 +58,8 @@ import org.apache.http.util.TextUtils;
 /**
  * Default implementation of {@link RedirectStrategy}. This strategy honors the restrictions
  * on automatic redirection of entity enclosing methods such as POST and PUT imposed by the
- * HTTP specification. <tt>302 Moved Temporarily</tt>, <tt>301 Moved Permanently</tt> and
+ * HTTP specification. {@code 302 Moved Temporarily</tt>, <tt>301 Moved Permanently} and
- * <tt>307 Temporary Redirect</tt> status codes will result in an automatic redirect of
+ * {@code 307 Temporary Redirect} status codes will result in an automatic redirect of
  * HEAD and GET methods only. POST and PUT methods will not be automatically redirected
  * as requiring user confirmation.
  * <p/>

httpclient/src/main/java/org/apache/http/impl/client/HttpClientBuilder.java

@@ -415,7 +415,7 @@ public class HttpClientBuilder {
     }
 
     /**
-     * Assigns <tt>User-Agent</tt> value.
+     * Assigns {@code User-Agent} value.
      * <p/>
      * Please note this value can be overridden by the {@link #setHttpProcessor(
      * org.apache.http.protocol.HttpProcessor)} method.

httpclient/src/main/java/org/apache/http/impl/client/RedirectLocations.java

@@ -106,7 +106,7 @@ public class RedirectLocations extends AbstractList<Object> {
      * @return the URI at the specified position in this list
      * @throws IndexOutOfBoundsException
      *             if the index is out of range (
-     *             <tt>index &lt; 0 || index &gt;= size()</tt>)
+     *             {@code index &lt; 0 || index &gt;= size()})
      * @since 4.3
      */
     @Override
@@ -116,8 +116,8 @@ public class RedirectLocations extends AbstractList<Object> {
 
     /**
      * Returns the number of elements in this list. If this list contains more
-     * than <tt>Integer.MAX_VALUE</tt> elements, returns
+     * than {@code Integer.MAX_VALUE} elements, returns
-     * <tt>Integer.MAX_VALUE</tt>.
+     * {@code Integer.MAX_VALUE}.
      *
      * @return the number of elements in this list
      * @since 4.3
@@ -137,7 +137,7 @@ public class RedirectLocations extends AbstractList<Object> {
      *            URI to be stored at the specified position
      * @return the URI previously at the specified position
      * @throws UnsupportedOperationException
-     *             if the <tt>set</tt> operation is not supported by this list
+     *             if the {@code set} operation is not supported by this list
      * @throws ClassCastException
      *             if the element is not a {@link URI}
      * @throws NullPointerException
@@ -145,7 +145,7 @@ public class RedirectLocations extends AbstractList<Object> {
      *             permit null elements
      * @throws IndexOutOfBoundsException
      *             if the index is out of range (
-     *             <tt>index &lt; 0 || index &gt;= size()</tt>)
+     *             {@code index &lt; 0 || index &gt;= size()})
      * @since 4.3
      */
     @Override
@@ -169,7 +169,7 @@ public class RedirectLocations extends AbstractList<Object> {
      * @param element
      *            URI to be inserted
      * @throws UnsupportedOperationException
-     *             if the <tt>add</tt> operation is not supported by this list
+     *             if the {@code add} operation is not supported by this list
      * @throws ClassCastException
      *             if the element is not a {@link URI}
      * @throws NullPointerException
@@ -177,7 +177,7 @@ public class RedirectLocations extends AbstractList<Object> {
      *             permit null elements
      * @throws IndexOutOfBoundsException
      *             if the index is out of range (
-     *             <tt>index &lt; 0 || index &gt; size()</tt>)
+     *             {@code index &lt; 0 || index &gt; size()})
      * @since 4.3
      */
     @Override
@@ -196,7 +196,7 @@ public class RedirectLocations extends AbstractList<Object> {
      * @return the URI previously at the specified position
      * @throws IndexOutOfBoundsException
      *             if the index is out of range (
-     *             <tt>index &lt; 0 || index &gt;= size()</tt>)
+     *             {@code index &lt; 0 || index &gt;= size()})
      * @since 4.3
      */
     @Override
@@ -210,13 +210,13 @@ public class RedirectLocations extends AbstractList<Object> {
     }
 
     /**
-     * Returns <tt>true</tt> if this collection contains the specified element.
+     * Returns {@code true} if this collection contains the specified element.
-     * More formally, returns <tt>true</tt> if and only if this collection
+     * More formally, returns {@code true} if and only if this collection
-     * contains at least one element <tt>e</tt> such that
+     * contains at least one element {@code e} such that
-     * <tt>(o==null&nbsp;?&nbsp;e==null&nbsp;:&nbsp;o.equals(e))</tt>.
+     * {@code (o==null&nbsp;?&nbsp;e==null&nbsp;:&nbsp;o.equals(e))}.
      *
      * @param o element whose presence in this collection is to be tested
-     * @return <tt>true</tt> if this collection contains the specified
+     * @return {@code true} if this collection contains the specified
      *         element
      */
     @Override

httpclient/src/main/java/org/apache/http/impl/conn/ConnectionShutdownException.java

@@ -41,7 +41,7 @@ public class ConnectionShutdownException extends IllegalStateException {
     private static final long serialVersionUID = 5868657401162844497L;
 
     /**
-     * Creates a new ConnectionShutdownException with a <tt>null</tt> detail message.
+     * Creates a new ConnectionShutdownException with a {@code null} detail message.
      */
     public ConnectionShutdownException() {
         super();

httpclient/src/main/java/org/apache/http/impl/conn/PoolingHttpClientConnectionManager.java

@@ -67,14 +67,14 @@ import org.apache.http.util.Args;
 import org.apache.http.util.Asserts;
 
 /**
- * <tt>ClientConnectionPoolManager</tt> maintains a pool of
+ * {@code ClientConnectionPoolManager} maintains a pool of
  * {@link HttpClientConnection}s and is able to service connection requests
  * from multiple execution threads. Connections are pooled on a per route
  * basis. A request for a route which already the manager has persistent
  * connections for available in the pool will be services by leasing
  * a connection from the pool rather than creating a brand new connection.
  * <p/>
- * <tt>ClientConnectionPoolManager</tt> maintains a maximum limit of connection
+ * {@code ClientConnectionPoolManager} maintains a maximum limit of connection
  * on a per route basis and in total. Per default this implementation will
  * create no more than than 2 concurrent connections per given route
  * and no more 20 connections in total. For many real-world applications

httpclient/src/main/java/org/apache/http/impl/cookie/AbstractCookieSpec.java

@@ -69,11 +69,11 @@ public abstract class AbstractCookieSpec implements CookieSpec {
 
     /**
      * Finds an attribute handler {@link CookieAttributeHandler} for the
-     * given attribute. Returns <tt>null</tt> if no attribute handler is
+     * given attribute. Returns {@code null} if no attribute handler is
      * found for the specified attribute.
      *
      * @param name attribute name. e.g. Domain, Path, etc.
-     * @return an attribute handler or <tt>null</tt>
+     * @return an attribute handler or {@code null}
      */
     protected CookieAttributeHandler findAttribHandler(final String name) {
         return this.attribHandlerMap.get(name);

httpclient/src/main/java/org/apache/http/impl/cookie/BasicClientCookie.java

@@ -94,7 +94,7 @@ public class BasicClientCookie implements SetCookie, ClientCookie, Cloneable, Se
 
     /**
      * Returns the comment describing the purpose of this cookie, or
-     * <tt>null</tt> if no such comment has been defined.
+     * {@code null} if no such comment has been defined.
      *
      * @return comment
      *
@@ -129,12 +129,12 @@ public class BasicClientCookie implements SetCookie, ClientCookie, Cloneable, Se
 
 
     /**
-     * Returns the expiration {@link Date} of the cookie, or <tt>null</tt>
+     * Returns the expiration {@link Date} of the cookie, or {@code null}
      * if none exists.
      * <p><strong>Note:</strong> the object returned by this method is
      * considered immutable. Changing it (e.g. using setTime()) could result
      * in undefined behaviour. Do so at your peril. </p>
-     * @return Expiration {@link Date}, or <tt>null</tt>.
+     * @return Expiration {@link Date}, or {@code null}.
      *
      * @see #setExpiryDate(java.util.Date)
      *
@@ -162,11 +162,11 @@ public class BasicClientCookie implements SetCookie, ClientCookie, Cloneable, Se
 
 
     /**
-     * Returns <tt>false</tt> if the cookie should be discarded at the end
+     * Returns {@code false} if the cookie should be discarded at the end
-     * of the "session"; <tt>true</tt> otherwise.
+     * of the "session"; {@code true} otherwise.
      *
-     * @return <tt>false</tt> if the cookie should be discarded at the end
+     * @return {@code false} if the cookie should be discarded at the end
-     *         of the "session"; <tt>true</tt> otherwise
+     *         of the "session"; {@code true} otherwise
      */
     @Override
     public boolean isPersistent() {
@@ -240,7 +240,7 @@ public class BasicClientCookie implements SetCookie, ClientCookie, Cloneable, Se
     /**
      * Sets the secure attribute of the cookie.
      * <p>
-     * When <tt>true</tt> the cookie should only be sent
+     * When {@code true} the cookie should only be sent
      * using a secure protocol (https).  This should only be set when
      * the cookie's originating server used a secure protocol to set the
      * cookie's value.
@@ -295,7 +295,7 @@ public class BasicClientCookie implements SetCookie, ClientCookie, Cloneable, Se
      * Returns true if this cookie has expired.
      * @param date Current time
      *
-     * @return <tt>true</tt> if the cookie has expired.
+     * @return {@code true} if the cookie has expired.
      */
     @Override
     public boolean isExpired(final Date date) {

httpclient/src/main/java/org/apache/http/impl/cookie/BrowserCompatVersionAttributeHandler.java

@@ -33,7 +33,7 @@ import org.apache.http.cookie.SetCookie;
 import org.apache.http.util.Args;
 
 /**
- * <tt>"Version"</tt> cookie attribute handler for BrowserCompat cookie spec.
+ * {@code "Version"} cookie attribute handler for BrowserCompat cookie spec.
  *
  * @since 4.3
  */

httpclient/src/main/java/org/apache/http/impl/cookie/NetscapeDraftSpec.java

@@ -82,7 +82,7 @@ public class NetscapeDraftSpec extends CookieSpecBase {
     }
 
     /**
-      * Parses the Set-Cookie value into an array of <tt>Cookie</tt>s.
+      * Parses the Set-Cookie value into an array of {@code Cookie}s.
       *
       * <p>Syntax of the Set-Cookie HTTP Response Header:</p>
       *
@@ -101,8 +101,8 @@ public class NetscapeDraftSpec extends CookieSpecBase {
       * @see <a href="http://web.archive.org/web/20020803110822/http://wp.netscape.com/newsref/std/cookie_spec.html">
       *  The Cookie Spec.</a>
       *
-      * @param header the <tt>Set-Cookie</tt> received from the server
+      * @param header the {@code Set-Cookie} received from the server
-      * @return an array of <tt>Cookie</tt>s parsed from the Set-Cookie value
+      * @return an array of {@code Cookie}s parsed from the Set-Cookie value
       * @throws MalformedCookieException if an exception occurs during parsing
       */
     @Override

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2109Spec.java

@@ -177,7 +177,7 @@ public class RFC2109Spec extends CookieSpecBase {
     }
 
     /**
-     * Return a name/value string suitable for sending in a <tt>"Cookie"</tt>
+     * Return a name/value string suitable for sending in a {@code "Cookie"}
      * header as defined in RFC 2109 for backward compatibility with cookie
      * version 0
      * @param buffer The char array buffer to use for output
@@ -201,7 +201,7 @@ public class RFC2109Spec extends CookieSpecBase {
     }
 
     /**
-     * Return a string suitable for sending in a <tt>"Cookie"</tt> header
+     * Return a string suitable for sending in a {@code "Cookie"} header
      * as defined in RFC 2109 for backward compatibility with cookie version 0
      * @param buffer The char array buffer to use for output
      * @param cookie The {@link Cookie} to be formatted as string

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2965CommentUrlAttributeHandler.java

@@ -36,7 +36,7 @@ import org.apache.http.cookie.SetCookie;
 import org.apache.http.cookie.SetCookie2;
 
 /**
- * <tt>"CommentURL"</tt> cookie attribute handler for RFC 2965 cookie spec.
+ * {@code "CommentURL"} cookie attribute handler for RFC 2965 cookie spec.
  *
  * @since 4.0
  */

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2965DiscardAttributeHandler.java

@@ -36,7 +36,7 @@ import org.apache.http.cookie.SetCookie;
 import org.apache.http.cookie.SetCookie2;
 
 /**
- * <tt>"Discard"</tt> cookie attribute handler for RFC 2965 cookie spec.
+ * {@code "Discard"} cookie attribute handler for RFC 2965 cookie spec.
  *
  * @since 4.0
  */

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2965DomainAttributeHandler.java

@@ -40,7 +40,7 @@ import org.apache.http.cookie.SetCookie;
 import org.apache.http.util.Args;
 
 /**
- * <tt>"Domain"</tt> cookie attribute handler for RFC 2965 cookie spec.
+ * {@code "Domain"} cookie attribute handler for RFC 2965 cookie spec.
  *
  *
  * @since 3.1

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2965PortAttributeHandler.java

@@ -41,7 +41,7 @@ import org.apache.http.cookie.SetCookie2;
 import org.apache.http.util.Args;
 
 /**
- * <tt>"Port"</tt> cookie attribute handler for RFC 2965 cookie spec.
+ * {@code "Port"} cookie attribute handler for RFC 2965 cookie spec.
  *
  * @since 4.0
  */
@@ -82,13 +82,13 @@ public class RFC2965PortAttributeHandler implements CookieAttributeHandler {
     }
 
     /**
-     * Returns <tt>true</tt> if the given port exists in the given
+     * Returns {@code true} if the given port exists in the given
      * ports list.
      *
      * @param port port of host where cookie was received from or being sent to.
      * @param ports port list
-     * @return true returns <tt>true</tt> if the given port exists in
+     * @return true returns {@code true} if the given port exists in
-     *         the given ports list; <tt>false</tt> otherwise.
+     *         the given ports list; {@code false} otherwise.
      */
     private static boolean portMatch(final int port, final int[] ports) {
         boolean portInList = false;

httpclient/src/main/java/org/apache/http/impl/cookie/RFC2965VersionAttributeHandler.java

@@ -39,7 +39,7 @@ import org.apache.http.cookie.SetCookie2;
 import org.apache.http.util.Args;
 
 /**
- * <tt>"Version"</tt> cookie attribute handler for RFC 2965 cookie spec.
+ * {@code "Version"} cookie attribute handler for RFC 2965 cookie spec.
  *
  * @since 4.0
  */

httpclient/src/test/java/org/apache/http/impl/cookie/TestCookieRFC2965Spec.java

@@ -46,7 +46,7 @@ import org.junit.Test;
 public class TestCookieRFC2965Spec {
 
     /**
-     * Test parsing cookie <tt>"Path"</tt> attribute.
+     * Test parsing cookie {@code "Path"} attribute.
      */
     @Test
     public void testParsePath() throws Exception {
@@ -103,7 +103,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test parsing cookie <tt>"Domain"</tt> attribute.
+     * Test parsing cookie {@code "Domain"} attribute.
      */
     @Test
     public void testParseDomain() throws Exception {
@@ -169,7 +169,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test parsing cookie <tt>"Port"</tt> attribute.
+     * Test parsing cookie {@code "Port"} attribute.
      */
     @Test
     public void testParsePort() throws Exception {
@@ -280,7 +280,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test parsing cookie <tt>"Version"</tt> attribute.
+     * test parsing cookie {@code "Version"} attribute.
      */
     @Test
     public void testParseVersion() throws Exception {
@@ -322,7 +322,7 @@ public class TestCookieRFC2965Spec {
         }
     }
     /**
-     * test parsing cookie <tt>"Max-age"</tt> attribute.
+     * test parsing cookie {@code "Max-age"} attribute.
      */
     @Test
     public void testParseMaxage() throws Exception {
@@ -377,7 +377,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test parsing <tt>"Secure"</tt> attribute.
+     * test parsing {@code "Secure"} attribute.
      */
     @Test
     public void testParseSecure() throws Exception {
@@ -392,7 +392,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test parsing <tt>"Discard"</tt> attribute.
+     * test parsing {@code "Discard"} attribute.
      */
     @Test
     public void testParseDiscard() throws Exception {
@@ -416,8 +416,8 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test parsing <tt>"Comment"</tt>, <tt>"CommentURL"</tt> and
+     * test parsing {@code "Comment"</tt>, <tt>"CommentURL"} and
-     * <tt>"Secure"</tt> attributes.
+     * {@code "Secure"} attributes.
      */
     @Test
     public void testParseOtherAttributes() throws Exception {
@@ -462,8 +462,8 @@ public class TestCookieRFC2965Spec {
     // ------------------------------------------------------- Test Cookie Validation
 
     /**
-     * Test <tt>Domain</tt> validation when domain is not specified
+     * Test {@code Domain} validation when domain is not specified
-     * in <tt>Set-Cookie2</tt> header.
+     * in {@code Set-Cookie2} header.
      */
     @Test
     public void testValidateNoDomain() throws Exception {
@@ -482,7 +482,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test <tt>Domain</tt> validation. Cookie domain attribute must have a
+     * Test {@code Domain} validation. Cookie domain attribute must have a
      * leading dot.
      */
     @Test
@@ -501,7 +501,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test <tt>Domain</tt> validation. Domain must have at least one embedded dot.
+     * Test {@code Domain} validation. Domain must have at least one embedded dot.
      */
     @Test
     public void testValidateDomainEmbeddedDot() throws Exception {
@@ -527,7 +527,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test local <tt>Domain</tt> validation. Simple host names
+     * Test local {@code Domain} validation. Simple host names
      * (without any dots) are valid only when cookie domain is specified
      * as ".local".
      */
@@ -574,7 +574,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test <tt>Domain</tt> validation. Effective host name
+     * Test {@code Domain} validation. Effective host name
      * must domain-match domain attribute.
      */
     @Test
@@ -604,7 +604,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test local <tt>Domain</tt> validation.
+     * Test local {@code Domain} validation.
      * Effective host name minus domain must not contain any dots.
      */
     @Test
@@ -622,7 +622,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test cookie <tt>Path</tt> validation. Cookie path attribute must path-match
+     * Test cookie {@code Path} validation. Cookie path attribute must path-match
      * request path.
      */
     @Test
@@ -698,7 +698,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test cookie <tt>Port</tt> validation. Request port must be in the
+     * Test cookie {@code Port} validation. Request port must be in the
      * port attribute list.
      */
     @Test
@@ -731,7 +731,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * Test cookie <tt>Version</tt> validation.
+     * Test cookie {@code Version} validation.
      */
     @Test
     public void testValidateVersion() throws Exception {
@@ -751,7 +751,7 @@ public class TestCookieRFC2965Spec {
     // ------------------------------------------------------- Test Cookie Matching
 
     /**
-     * test cookie <tt>Path</tt> matching. Cookie path attribute must path-match
+     * test cookie {@code Path} matching. Cookie path attribute must path-match
      * path of the request URI.
      */
     @Test
@@ -768,7 +768,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test cookie <tt>Domain</tt> matching.
+     * test cookie {@code Domain} matching.
      */
     @Test
     public void testMatchDomain() throws Exception {
@@ -789,7 +789,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test cookie local <tt>Domain</tt> matching.
+     * test cookie local {@code Domain} matching.
      */
     @Test
     public void testMatchDomainLocal() throws Exception {
@@ -805,7 +805,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test cookie <tt>Port</tt> matching.
+     * test cookie {@code Port} matching.
      */
     @Test
     public void testMatchPort() throws Exception {
@@ -865,7 +865,7 @@ public class TestCookieRFC2965Spec {
     }
 
     /**
-     * test cookie <tt>Secure</tt> attribute.
+     * test cookie {@code Secure} attribute.
      */
     @Test
     public void testCookieSecure() throws Exception {
@@ -996,7 +996,7 @@ public class TestCookieRFC2965Spec {
     // ------------------------------------------------------- Backward compatibility tests
 
     /**
-     * Test rejection of <tt>Set-Cookie</tt> header.
+     * Test rejection of {@code Set-Cookie} header.
      */
     @Test
     public void testRejectSetCookie() throws Exception {